/**
 * WhatsPavan — Complete Custom CSS Framework
 * Zero third-party dependencies. Ultra-fast, pure vanilla CSS.
 * Full utility, form controls, option selections, and component coverage.
 */

/* ==========================================================================
   1. Design Tokens & CSS Variables
   ========================================================================== */
:root {
    --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Primary & Brand */
    --primary-50:  #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;
    --primary-950: #1e1b4b;

    --c-primary: var(--primary-600);
    --c-primary-hover: var(--primary-700);
    --c-primary-light: var(--primary-50);
    --c-primary-rgb: 79, 70, 229;

    /* Slate Neutral Scale */
    --slate-50:  #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --slate-950: #020617;

    /* Colors */
    --emerald-50: #ecfdf5;  --emerald-100: #d1fae5; --emerald-200: #a7f3d0; --emerald-500: #10b981; --emerald-600: #059669; --emerald-700: #047857; --emerald-800: #065f46; --emerald-900: #064e3b; --emerald-950: #022c22;
    --green-50: #f0fdf4;    --green-100: #dcfce7;   --green-200: #bbf7d0;   --green-500: #22c55e;   --green-600: #16a34a;   --green-700: #15803d;   --green-800: #166534;   --green-900: #14532d;
    --red-50: #fef2f2;      --red-100: #fee2e2;     --red-200: #fecaca;     --red-500: #ef4444;     --red-600: #dc2626;     --red-700: #b91c1c;     --red-800: #991b1b;     --red-900: #7f1d1d;     --red-950: #450a0a;
    --rose-50: #fff1f2;     --rose-100: #ffe4e6;    --rose-200: #fecdd3;    --rose-500: #f43f5e;    --rose-600: #e11d48;    --rose-700: #be123c;    --rose-800: #9f1239;    --rose-900: #881337;
    --blue-50: #eff6ff;     --blue-100: #dbeafe;    --blue-200: #bfdbfe;    --blue-500: #3b82f6;    --blue-600: #2563eb;    --blue-700: #1d4ed8;    --blue-800: #1e40af;    --blue-900: #1e3a8a;
    --indigo-50: #eef2ff;   --indigo-100: #e0e7ff;  --indigo-200: #c7d2fe;  --indigo-500: #6366f1;  --indigo-600: #4f46e5;  --indigo-700: #4338ca;  --indigo-800: #3730a3;  --indigo-900: #312e81;
    --purple-50: #faf5ff;   --purple-100: #f3e8ff;  --purple-200: #e9d5ff;  --purple-500: #a855f7;  --purple-600: #9333ea;  --purple-700: #7e22ce;  --purple-800: #6b21a8;  --purple-900: #581c87;
    --amber-50: #fffbeb;    --amber-100: #fef3c7;   --amber-200: #fde68a;   --amber-500: #f59e0b;   --amber-600: #d97706;   --amber-700: #b45309;   --amber-800: #92400e;   --amber-900: #78350f;

    /* Theme Semantic */
    --c-body-bg: #f8fafc;
    --c-body-text: #1e293b;
    --c-muted: #64748b;
    --c-border: #e2e8f0;
    --c-surface: #ffffff;
    --c-surface-hover: #f1f5f9;
    --c-input-bg: #ffffff;
    --c-input-border: #cbd5e1;
    --c-danger: #dc2626;

    --sidebar-w: 250px;
    --sidebar-w-collapsed: 64px;
    --topbar-h: 56px;
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.25rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

    --dur: 0.15s;
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark mode overrides */
html.dark, body.dark, .dark {
    --c-body-bg: #0f172a;
    --c-body-text: #f1f5f9;
    --c-muted: #94a3b8;
    --c-border: #334155;
    --c-surface: #1e293b;
    --c-surface-hover: #334155;
    --c-input-bg: #0f172a;
    --c-input-border: #334155;
}

/* ==========================================================================
   2. Reset & Global Box Model
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    height: 100%;
    -webkit-text-size-adjust: 100%;
}

body {
    min-height: 100%;
    font-family: var(--font);
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--c-body-text);
    background-color: var(--c-body-bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    cursor: pointer;
    font: inherit;
    border: none;
    background: transparent;
    color: inherit;
}

input, select, textarea {
    font: inherit;
    color: inherit;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

/* ==========================================================================
   3. Inline SVGs & Icon System
   ========================================================================== */
.icon, i[class*="ph-"], i[class*="bi-"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    vertical-align: middle;
    width: 1.2em;
    height: 1.2em;
    font-style: normal;
    line-height: 1;
    flex-shrink: 0;
}

.icon svg, i[class*="ph-"] svg, i[class*="bi-"] svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* ==========================================================================
   4. Flexbox Utilities
   ========================================================================== */
.flex             { display: flex; }
.inline-flex      { display: inline-flex; }
.flex-col         { flex-direction: column; }
.flex-row         { flex-direction: row; }
.flex-wrap        { flex-wrap: wrap; }
.flex-nowrap      { flex-wrap: nowrap; }
.flex-1           { flex: 1 1 0%; }
.flex-auto        { flex: 1 1 auto; }
.flex-initial     { flex: 0 1 auto; }
.flex-none        { flex: none; }
.shrink-0         { flex-shrink: 0; }
.flex-shrink-0    { flex-shrink: 0; }
.flex-grow        { flex-grow: 1; }

.items-start      { align-items: flex-start; }
.items-center     { align-items: center; }
.items-end        { align-items: flex-end; }
.items-stretch    { align-items: stretch; }
.items-baseline   { align-items: baseline; }

.justify-start    { justify-content: flex-start; }
.justify-center   { justify-content: center; }
.justify-end      { justify-content: flex-end; }
.justify-between  { justify-content: space-between; }
.justify-around   { justify-content: space-around; }
.justify-evenly   { justify-content: space-evenly; }

.gap-0   { gap: 0; }
.gap-1   { gap: 0.25rem; }
.gap-1\.5{ gap: 0.375rem; }
.gap-2   { gap: 0.5rem; }
.gap-2\.5{ gap: 0.625rem; }
.gap-3   { gap: 0.75rem; }
.gap-4   { gap: 1rem; }
.gap-5   { gap: 1.25rem; }
.gap-6   { gap: 1.5rem; }
.gap-8   { gap: 2rem; }

/* Space between child utilities */
.space-y-1 > :not([hidden]) ~ :not([hidden]) { margin-top: 0.25rem; }
.space-y-1\.5 > :not([hidden]) ~ :not([hidden]) { margin-top: 0.375rem; }
.space-y-2 > :not([hidden]) ~ :not([hidden]) { margin-top: 0.5rem; }
.space-y-2\.5 > :not([hidden]) ~ :not([hidden]) { margin-top: 0.625rem; }
.space-y-3 > :not([hidden]) ~ :not([hidden]) { margin-top: 0.75rem; }
.space-y-4 > :not([hidden]) ~ :not([hidden]) { margin-top: 1rem; }
.space-y-5 > :not([hidden]) ~ :not([hidden]) { margin-top: 1.25rem; }
.space-y-6 > :not([hidden]) ~ :not([hidden]) { margin-top: 1.5rem; }
.space-y-8 > :not([hidden]) ~ :not([hidden]) { margin-top: 2rem; }

.space-x-1 > :not([hidden]) ~ :not([hidden]) { margin-left: 0.25rem; }
.space-x-2 > :not([hidden]) ~ :not([hidden]) { margin-left: 0.5rem; }
.space-x-3 > :not([hidden]) ~ :not([hidden]) { margin-left: 0.75rem; }
.space-x-4 > :not([hidden]) ~ :not([hidden]) { margin-left: 1rem; }
.space-x-6 > :not([hidden]) ~ :not([hidden]) { margin-left: 1.5rem; }

/* ==========================================================================
   5. CSS Grid Utilities & Responsive Columns
   ========================================================================== */
.grid { display: grid; }
.inline-grid { display: inline-grid; }

.grid-cols-1  { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2  { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3  { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4  { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-cols-5  { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid-cols-6  { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

.col-span-1  { grid-column: span 1 / span 1; }
.col-span-2  { grid-column: span 2 / span 2; }
.col-span-3  { grid-column: span 3 / span 3; }
.col-span-4  { grid-column: span 4 / span 4; }
.col-span-5  { grid-column: span 5 / span 5; }
.col-span-6  { grid-column: span 6 / span 6; }
.col-span-8  { grid-column: span 8 / span 8; }
.col-span-12 { grid-column: span 12 / span 12; }

@media (min-width: 640px) {
    .sm\:flex-row { flex-direction: row; }
    .sm\:items-center { align-items: center; }
    .sm\:justify-between { justify-content: space-between; }
    .sm\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
    .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .sm\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .sm\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
    .sm\:col-span-1 { grid-column: span 1 / span 1; }
    .sm\:col-span-2 { grid-column: span 2 / span 2; }
    .sm\:w-44 { width: 11rem; }
    .sm\:w-auto { width: auto; }
}

@media (min-width: 768px) {
    .md\:flex-row { flex-direction: row; }
    .md\:items-center { align-items: center; }
    .md\:justify-between { justify-content: space-between; }
    .md\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
    .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .md\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
    .md\:col-span-1 { grid-column: span 1 / span 1; }
    .md\:col-span-2 { grid-column: span 2 / span 2; }
    .md\:col-span-3 { grid-column: span 3 / span 3; }
    .md\:col-span-4 { grid-column: span 4 / span 4; }
    .md\:col-span-5 { grid-column: span 5 / span 5; }
    .md\:col-span-6 { grid-column: span 6 / span 6; }
    .md\:col-span-7 { grid-column: span 7 / span 7; }
    .md\:col-span-8 { grid-column: span 8 / span 8; }
    .md\:col-span-9 { grid-column: span 9 / span 9; }
    .md\:col-span-10 { grid-column: span 10 / span 10; }
    .md\:col-span-11 { grid-column: span 11 / span 11; }
    .md\:col-span-12 { grid-column: span 12 / span 12; }
}

@media (min-width: 1024px) {
    .lg\:flex-row     { flex-direction: row; }
    .lg\:items-center { align-items: center; }
    .lg\:grid-cols-1  { grid-template-columns: repeat(1, minmax(0, 1fr)); }
    .lg\:grid-cols-2  { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .lg\:grid-cols-3  { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .lg\:grid-cols-4  { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .lg\:grid-cols-5  { grid-template-columns: repeat(5, minmax(0, 1fr)); }
    .lg\:grid-cols-6  { grid-template-columns: repeat(6, minmax(0, 1fr)); }
    .lg\:grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
    .lg\:col-span-1 { grid-column: span 1 / span 1; }
    .lg\:col-span-2 { grid-column: span 2 / span 2; }
    .lg\:col-span-3 { grid-column: span 3 / span 3; }
    .lg\:col-span-4 { grid-column: span 4 / span 4; }
    .lg\:col-span-5 { grid-column: span 5 / span 5; }
    .lg\:col-span-6 { grid-column: span 6 / span 6; }
    .lg\:col-span-7 { grid-column: span 7 / span 7; }
    .lg\:col-span-8 { grid-column: span 8 / span 8; }
    .lg\:col-span-9 { grid-column: span 9 / span 9; }
    .lg\:col-span-10 { grid-column: span 10 / span 10; }
    .lg\:col-span-11 { grid-column: span 11 / span 11; }
    .lg\:col-span-12 { grid-column: span 12 / span 12; }
}

/* ==========================================================================
   6. Spacing Utilities (Padding & Margin)
   ========================================================================== */
.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-1\.5 { padding: 0.375rem; }
.p-2 { padding: 0.5rem; }
.p-2\.5 { padding: 0.625rem; }
.p-3 { padding: 0.75rem; }
.p-3\.5 { padding: 0.875rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.p-12 { padding: 3rem; }

.px-0 { padding-left: 0; padding-right: 0; }
.px-1 { padding-left: 0.25rem; padding-right: 0.25rem; }
.px-1\.5 { padding-left: 0.375rem; padding-right: 0.375rem; }
.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-2\.5 { padding-left: 0.625rem; padding-right: 0.625rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-3\.5 { padding-left: 0.875rem; padding-right: 0.875rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-5 { padding-left: 1.25rem; padding-right: 1.25rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }

.py-0 { padding-top: 0; padding-bottom: 0; }
.py-0\.5 { padding-top: 0.125rem; padding-bottom: 0.125rem; }
.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-1\.5 { padding-top: 0.375rem; padding-bottom: 0.375rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-2\.5 { padding-top: 0.625rem; padding-bottom: 0.625rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-3\.5 { padding-top: 0.875rem; padding-bottom: 0.875rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-5 { padding-top: 1.25rem; padding-bottom: 1.25rem; }
.py-6 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }

.pl-2 { padding-left: 0.5rem; }
.pl-3 { padding-left: 0.75rem; }
.pl-4 { padding-left: 1rem; }
.pl-8 { padding-left: 2rem; }
.pl-9 { padding-left: 2.25rem; }
.pr-2 { padding-right: 0.5rem; }
.pr-3 { padding-right: 0.75rem; }
.pr-4 { padding-right: 1rem; }
.pr-8 { padding-right: 2rem; }
.pr-10 { padding-right: 2.5rem; }
.pt-1 { padding-top: 0.25rem; }
.pt-2 { padding-top: 0.5rem; }
.pt-3 { padding-top: 0.75rem; }
.pt-4 { padding-top: 1rem; }
.pt-5 { padding-top: 1.25rem; }
.pt-6 { padding-top: 1.5rem; }
.pb-1 { padding-bottom: 0.25rem; }
.pb-2 { padding-bottom: 0.5rem; }
.pb-3 { padding-bottom: 0.75rem; }
.pb-4 { padding-bottom: 1rem; }

.m-0 { margin: 0; }
.m-auto { margin: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }
.my-auto { margin-top: auto; margin-bottom: auto; }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }
.mt-auto { margin-top: auto; }
.mb-auto { margin-bottom: auto; }

.mt-0 { margin-top: 0; }
.mt-0\.5 { margin-top: 0.125rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-5 { margin-top: 1.25rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }

.mb-0 { margin-bottom: 0; }
.mb-0\.5 { margin-bottom: 0.125rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-1\.5 { margin-bottom: 0.375rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 1.25rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }

.ml-1 { margin-left: 0.25rem; }
.ml-2 { margin-left: 0.5rem; }
.ml-3 { margin-left: 0.75rem; }
.ml-4 { margin-left: 1rem; }
.mr-1 { margin-right: 0.25rem; }
.mr-2 { margin-right: 0.5rem; }
.mr-3 { margin-right: 0.75rem; }
.mr-4 { margin-right: 1rem; }

.-m-6 { margin: -1.5rem; }

/* ==========================================================================
   7. Sizing & Dimensions
   ========================================================================== */
.w-full   { width: 100%; }
.w-auto   { width: auto; }
.w-screen { width: 100vw; }
.w-max    { width: max-content; }
.w-fit    { width: fit-content; }

.w-1\.5 { width: 0.375rem; }
.w-2  { width: 0.5rem; }
.w-2\.5 { width: 0.625rem; }
.w-3  { width: 0.75rem; }
.w-3\.5 { width: 0.875rem; }
.w-4  { width: 1rem; }
.w-5  { width: 1.25rem; }
.w-6  { width: 1.5rem; }
.w-7  { width: 1.75rem; }
.w-8  { width: 2rem; }
.w-9  { width: 2.25rem; }
.w-10 { width: 2.5rem; }
.w-11 { width: 2.75rem; }
.w-12 { width: 3rem; }
.w-14 { width: 3.5rem; }
.w-16 { width: 4rem; }
.w-20 { width: 5rem; }
.w-24 { width: 6rem; }
.w-28 { width: 7rem; }
.w-32 { width: 8rem; }
.w-40 { width: 10rem; }
.w-48 { width: 12rem; }
.w-64 { width: 16rem; }
.w-72 { width: 18rem; }
.w-80 { width: 20rem; }
.w-96 { width: 24rem; }

.max-w-xs { max-width: 20rem; }
.max-w-sm { max-width: 24rem; }
.max-w-md { max-width: 28rem; }
.max-w-lg { max-width: 32rem; }
.max-w-xl { max-width: 36rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-5xl { max-width: 64rem; }
.max-w-6xl { max-width: 72rem; }
.max-w-7xl { max-width: 80rem; }
.max-w-full { max-width: 100%; }

.min-w-0 { min-width: 0; }
.min-h-0 { min-height: 0; }
.min-h-screen { min-height: 100vh; }

.h-full   { height: 100%; }
.h-auto   { height: auto; }
.h-screen { height: 100vh; }

.h-1  { height: 0.25rem; }
.h-1\.5 { height: 0.375rem; }
.h-2  { height: 0.5rem; }
.h-2\.5 { height: 0.625rem; }
.h-3  { height: 0.75rem; }
.h-3\.5 { height: 0.875rem; }
.h-4  { height: 1rem; }
.h-5  { height: 1.25rem; }
.h-6  { height: 1.5rem; }
.h-7  { height: 1.75rem; }
.h-8  { height: 2rem; }
.h-9  { height: 2.25rem; }
.h-10 { height: 2.5rem; }
.h-11 { height: 2.75rem; }
.h-12 { height: 3rem; }
.h-14 { height: 3.5rem; }
.h-16 { height: 4rem; }
.h-20 { height: 5rem; }
.h-24 { height: 6rem; }
.h-32 { height: 8rem; }
.h-48 { height: 12rem; }
.h-56 { height: 14rem; }
.h-64 { height: 16rem; }
.h-72 { height: 18rem; }

/* ==========================================================================
   8. Typography Utilities
   ========================================================================== */
.text-\[10px\] { font-size: 10px; line-height: 14px; }
.text-\[11px\] { font-size: 11px; line-height: 15px; }
.text-xs   { font-size: 0.75rem; line-height: 1rem; }
.text-sm   { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg   { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl   { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl  { font-size: 1.5rem; line-height: 2rem; }
.text-3xl  { font-size: 1.875rem; line-height: 2.25rem; }
.text-4xl  { font-size: 2.25rem; line-height: 2.5rem; }

.font-light     { font-weight: 300; }
.font-normal    { font-weight: 400; }
.font-medium    { font-weight: 500; }
.font-semibold  { font-weight: 600; }
.font-bold      { font-weight: 700; }
.font-extrabold { font-weight: 800; }
.font-mono      { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; }

.text-left    { text-align: left; }
.text-center  { text-align: center; }
.text-right   { text-align: right; }
.text-justify { text-align: justify; }

.uppercase  { text-transform: uppercase; }
.lowercase  { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

.tracking-tight { letter-spacing: -0.025em; }
.tracking-normal{ letter-spacing: 0em; }
.tracking-wide  { letter-spacing: 0.025em; }
.tracking-wider { letter-spacing: 0.05em; }

.leading-none    { line-height: 1; }
.leading-tight   { line-height: 1.25; }
.leading-snug    { line-height: 1.375; }
.leading-normal  { line-height: 1.5; }
.leading-relaxed { line-height: 1.625; }

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.whitespace-nowrap { white-space: nowrap; }
.line-clamp-1 {
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==========================================================================
   9. Color & Background Palette Utilities
   ========================================================================== */
/* Slate Texts */
.text-slate-50  { color: var(--slate-50); }
.text-slate-100 { color: var(--slate-100); }
.text-slate-200 { color: var(--slate-200); }
.text-slate-300 { color: var(--slate-300); }
.text-slate-400 { color: var(--slate-400); }
.text-slate-500 { color: var(--slate-500); }
.text-slate-600 { color: var(--slate-600); }
.text-slate-700 { color: var(--slate-700); }
.text-slate-800 { color: var(--slate-800); }
.text-slate-900 { color: var(--slate-900); }

/* Primary Texts */
.text-primary-100 { color: var(--primary-100); }
.text-primary-200 { color: var(--primary-200); }
.text-primary-300 { color: var(--primary-300); }
.text-primary-500 { color: var(--primary-500); }
.text-primary-600 { color: var(--primary-600); }
.text-primary-700 { color: var(--primary-700); }
.text-primary-800 { color: var(--primary-800); }
.text-primary-900 { color: var(--primary-900); }
.text-primary     { color: var(--primary-600); }

/* Emerald / Green Texts */
.text-emerald-300 { color: var(--emerald-300); }
.text-emerald-400 { color: var(--emerald-400); }
.text-emerald-500 { color: var(--emerald-500); }
.text-emerald-600 { color: var(--emerald-600); }
.text-emerald-700 { color: var(--emerald-700); }
.text-emerald-800 { color: var(--emerald-800); }
.text-green-400   { color: #4ade80; }
.text-green-500   { color: var(--green-500); }
.text-green-600   { color: var(--green-600); }
.text-green-700   { color: var(--green-700); }

/* Blue Texts */
.text-blue-300 { color: var(--blue-300); }
.text-blue-400 { color: var(--blue-400); }
.text-blue-500 { color: var(--blue-500); }
.text-blue-600 { color: var(--blue-600); }
.text-blue-700 { color: var(--blue-700); }
.text-indigo-500 { color: var(--indigo-500); }
.text-indigo-600 { color: var(--indigo-600); }
.text-indigo-700 { color: var(--indigo-700); }

/* Sky / Cyan / Teal / Orange / Fuchsia */
.text-sky-400    { color: #38bdf8; }
.text-sky-500    { color: #0ea5e9; }
.text-sky-600    { color: #0284c7; }
.text-cyan-500   { color: #06b6d4; }
.text-cyan-600   { color: #0891b2; }
.text-teal-500   { color: #14b8a6; }
.text-orange-500 { color: #f97316; }
.text-fuchsia-500{ color: #d946ef; }

/* Red / Rose Texts */
.text-red-300  { color: var(--red-300); }
.text-red-400  { color: var(--red-400); }
.text-red-500  { color: var(--red-500); }
.text-red-600  { color: var(--red-600); }
.text-red-700  { color: var(--red-700); }
.text-red-800  { color: var(--red-800); }
.text-rose-500 { color: var(--rose-500); }
.text-rose-600 { color: var(--rose-600); }
.text-rose-700 { color: var(--rose-700); }

/* Amber / Purple / White Texts */
.text-amber-400  { color: #fbbf24; }
.text-amber-500  { color: var(--amber-500); }
.text-amber-600  { color: var(--amber-600); }
.text-amber-700  { color: var(--amber-700); }
.text-purple-500 { color: var(--purple-500); }
.text-purple-600 { color: var(--purple-600); }
.text-purple-700 { color: var(--purple-700); }
.text-white      { color: #ffffff !important; }
.text-muted      { color: var(--c-muted); }

/* Background Utilities */
.bg-white        { background-color: #ffffff; }
.bg-transparent  { background-color: transparent; }

.bg-slate-50     { background-color: var(--slate-50); }
.bg-slate-50\/50 { background-color: rgba(248, 250, 252, 0.5); }
.bg-slate-100    { background-color: var(--slate-100); }
.bg-slate-200    { background-color: var(--slate-200); }
.bg-slate-300    { background-color: var(--slate-300); }
.bg-slate-600    { background-color: var(--slate-600); }
.bg-slate-700    { background-color: var(--slate-700); }
.bg-slate-700\/20{ background-color: rgba(51, 65, 85, 0.2); }
.bg-slate-700\/40{ background-color: rgba(51, 65, 85, 0.4); }
.bg-slate-700\/50{ background-color: rgba(51, 65, 85, 0.5); }
.bg-slate-700\/60{ background-color: rgba(51, 65, 85, 0.6); }
.bg-slate-800    { background-color: var(--slate-800); }
.bg-slate-800\/50{ background-color: rgba(30, 41, 59, 0.5); }
.bg-slate-900    { background-color: var(--slate-900); }
.bg-slate-900\/20{ background-color: rgba(15, 23, 42, 0.2); }
.bg-slate-900\/40{ background-color: rgba(15, 23, 42, 0.4); }
.bg-slate-950    { background-color: var(--slate-950); }

.bg-primary-50     { background-color: var(--primary-50); }
.bg-primary-100    { background-color: var(--primary-100); }
.bg-primary-200    { background-color: var(--primary-200); }
.bg-primary-500    { background-color: var(--primary-500); }
.bg-primary-600    { background-color: var(--primary-600); }
.bg-primary-700    { background-color: var(--primary-700); }
.bg-primary-800    { background-color: var(--primary-800); }
.bg-primary-900\/20{ background-color: rgba(49, 46, 129, 0.2); }
.bg-primary-900\/30{ background-color: rgba(49, 46, 129, 0.3); }
.bg-primary-900\/40{ background-color: rgba(49, 46, 129, 0.4); }
.bg-primary-950\/40{ background-color: rgba(30, 27, 75, 0.4); }
.bg-primary-950\/60{ background-color: rgba(30, 27, 75, 0.6); }

.bg-blue-50     { background-color: var(--blue-50); }
.bg-blue-100    { background-color: var(--blue-100); }
.bg-blue-500    { background-color: var(--blue-500); }
.bg-blue-600    { background-color: var(--blue-600); }
.bg-blue-700    { background-color: var(--blue-700); }
.bg-blue-900\/20{ background-color: rgba(30, 58, 138, 0.2); }
.bg-blue-900\/30{ background-color: rgba(30, 58, 138, 0.3); }
.bg-blue-950\/30{ background-color: rgba(23, 37, 84, 0.3); }

.bg-sky-50      { background-color: #f0f9ff; }
.bg-cyan-50     { background-color: #ecfeff; }
.bg-teal-50     { background-color: #f0fdfa; }
.bg-orange-50   { background-color: #fff7ed; }
.bg-fuchsia-50  { background-color: #fdf4ff; }

.bg-green-50    { background-color: var(--green-50); }
.bg-green-100   { background-color: var(--green-100); }
.bg-green-500   { background-color: var(--green-500); }
.bg-green-600   { background-color: var(--green-600); }
.bg-green-900\/30{ background-color: rgba(20, 83, 45, 0.3); }

.bg-emerald-50     { background-color: var(--emerald-50); }
.bg-emerald-100    { background-color: var(--emerald-100); }
.bg-emerald-500    { background-color: var(--emerald-500); }
.bg-emerald-600    { background-color: var(--emerald-600); }
.bg-emerald-700    { background-color: var(--emerald-700); }
.bg-emerald-900\/20{ background-color: rgba(6, 78, 59, 0.2); }
.bg-emerald-900\/40{ background-color: rgba(6, 78, 59, 0.4); }
.bg-emerald-950\/40{ background-color: rgba(2, 44, 34, 0.4); }
.bg-emerald-950\/60{ background-color: rgba(2, 44, 34, 0.6); }

.bg-red-50     { background-color: var(--red-50); }
.bg-red-100    { background-color: var(--red-100); }
.bg-red-500    { background-color: var(--red-500); }
.bg-red-600    { background-color: var(--red-600); }
.bg-red-700    { background-color: var(--red-700); }
.bg-red-900\/20{ background-color: rgba(127, 29, 29, 0.2); }
.bg-red-900\/40{ background-color: rgba(127, 29, 29, 0.4); }
.bg-red-950\/30{ background-color: rgba(69, 10, 10, 0.3); }
.bg-red-950\/40{ background-color: rgba(69, 10, 10, 0.4); }
.bg-red-950\/60{ background-color: rgba(69, 10, 10, 0.6); }

.bg-rose-50     { background-color: var(--rose-50); }
.bg-rose-100    { background-color: var(--rose-100); }
.bg-rose-500    { background-color: var(--rose-500); }
.bg-rose-600    { background-color: var(--rose-600); }
.bg-rose-950\/30{ background-color: rgba(76, 5, 25, 0.3); }

.bg-amber-50    { background-color: var(--amber-50); }
.bg-amber-100   { background-color: var(--amber-100); }
.bg-amber-500   { background-color: var(--amber-500); }
.bg-amber-600   { background-color: var(--amber-600); }
.bg-amber-900\/30{ background-color: rgba(120, 53, 15, 0.3); }
.bg-amber-950\/30{ background-color: rgba(69, 26, 3, 0.3); }

.bg-purple-50   { background-color: var(--purple-50); }
.bg-purple-100  { background-color: var(--purple-100); }
.bg-purple-500  { background-color: var(--purple-500); }
.bg-purple-600  { background-color: var(--purple-600); }
.bg-purple-900\/30{ background-color: rgba(88, 28, 135, 0.3); }
.bg-purple-950\/30{ background-color: rgba(59, 7, 100, 0.3); }

.bg-indigo-50   { background-color: var(--indigo-50); }
.bg-indigo-100  { background-color: var(--indigo-100); }
.bg-indigo-500  { background-color: var(--indigo-500); }
.bg-indigo-600  { background-color: var(--indigo-600); }
.bg-indigo-950\/30{ background-color: rgba(30, 27, 75, 0.3); }

/* Hover States */
.hover\:bg-slate-50:hover    { background-color: var(--slate-50); }
.hover\:bg-slate-50\/50:hover{ background-color: rgba(248, 250, 252, 0.5); }
.hover\:bg-slate-50\/60:hover{ background-color: rgba(248, 250, 252, 0.6); }
.hover\:bg-slate-100:hover   { background-color: var(--slate-100); }
.hover\:bg-slate-200:hover   { background-color: var(--slate-200); }
.hover\:bg-slate-600:hover   { background-color: var(--slate-600); }
.hover\:bg-slate-700:hover   { background-color: var(--slate-700); }
.hover\:bg-slate-800:hover   { background-color: var(--slate-800); }
.hover\:bg-slate-900:hover   { background-color: var(--slate-900); }

.hover\:bg-primary-50:hover  { background-color: var(--primary-50); }
.hover\:bg-primary-600:hover { background-color: var(--primary-600); }
.hover\:bg-primary-700:hover { background-color: var(--primary-700); }
.hover\:bg-emerald-50:hover  { background-color: var(--emerald-50); }
.hover\:bg-emerald-700:hover { background-color: var(--emerald-700); }
.hover\:bg-red-50:hover      { background-color: var(--red-50); }
.hover\:bg-red-700:hover     { background-color: var(--red-700); }
.hover\:bg-blue-700:hover    { background-color: var(--blue-700); }
.hover\:bg-sky-50:hover      { background-color: #f0f9ff; }

.hover\:text-primary-600:hover { color: var(--primary-600); }
.hover\:text-primary-700:hover { color: var(--primary-700); }
.hover\:text-blue-600:hover    { color: var(--blue-600); }
.hover\:text-sky-600:hover     { color: #0284c7; }
.hover\:text-red-500:hover     { color: #ef4444; }
.hover\:text-red-600:hover     { color: var(--red-600); }
.hover\:text-slate-600:hover   { color: var(--slate-600); }
.hover\:text-slate-700:hover   { color: var(--slate-700); }
.hover\:text-slate-800:hover   { color: var(--slate-800); }
.hover\:text-slate-900:hover   { color: var(--slate-900); }

.hover\:border-slate-300:hover { border-color: var(--slate-300); }
.hover\:border-sky-300:hover   { border-color: #7dd3fc; }

.hover\:shadow-md:hover { box-shadow: var(--shadow-md); }
.hover\:shadow-sm:hover { box-shadow: var(--shadow-sm); }
.hover\:shadow:hover    { box-shadow: var(--shadow); }

/* Group Hover */
.group:hover .group-hover\:text-slate-500 { color: var(--slate-500); }
.group:hover .group-hover\:text-primary-600 { color: var(--primary-600); }

/* ==========================================================================
   10. Borders & Rounded Corners
   ========================================================================== */
.border       { border: 1px solid var(--c-border); }
.border-0     { border-width: 0px; }
.border-2     { border-width: 2px; }
.border-t     { border-top: 1px solid var(--c-border); }
.border-b     { border-bottom: 1px solid var(--c-border); }
.border-l     { border-left: 1px solid var(--c-border); }
.border-r     { border-right: 1px solid var(--c-border); }
.border-l-4   { border-left: 4px solid var(--c-border); }
.border-t-2   { border-top: 2px solid var(--c-border); }
.border-dashed{ border-style: dashed; }
.border-transparent { border-color: transparent; }

.border-slate-100    { border-color: var(--slate-100); }
.border-slate-200    { border-color: var(--slate-200); }
.border-slate-200\/80{ border-color: rgba(226, 232, 240, 0.8); }
.border-slate-300    { border-color: var(--slate-300); }
.border-slate-700    { border-color: var(--slate-700); }
.border-slate-700\/40{ border-color: rgba(51, 65, 85, 0.4); }
.border-slate-700\/60{ border-color: rgba(51, 65, 85, 0.6); }
.border-slate-700\/80{ border-color: rgba(51, 65, 85, 0.8); }
.border-slate-800    { border-color: var(--slate-800); }

.border-primary-100 { border-color: var(--primary-100); }
.border-primary-200 { border-color: var(--primary-200); }
.border-primary-500 { border-color: var(--primary-500); }
.border-primary-600 { border-color: var(--primary-600); }
.border-primary-800 { border-color: var(--primary-800); }

.border-emerald-200 { border-color: var(--emerald-200); }
.border-emerald-500 { border-color: var(--emerald-500); }
.border-emerald-800 { border-color: var(--emerald-800); }

.border-green-500 { border-color: var(--green-500); }
.border-purple-500 { border-color: var(--purple-500); }
.border-red-200 { border-color: var(--red-200); }
.border-red-800 { border-color: var(--red-800); }
.border-rose-500 { border-color: var(--rose-500); }
.border-blue-500 { border-color: var(--blue-500); }
.border-indigo-500 { border-color: var(--indigo-500); }
.border-amber-500 { border-color: var(--amber-500); }

.rounded-none { border-radius: 0; }
.rounded-sm   { border-radius: var(--radius-sm); }
.rounded      { border-radius: var(--radius); }
.rounded-md   { border-radius: var(--radius); }
.rounded-lg   { border-radius: var(--radius-lg); }
.rounded-xl   { border-radius: var(--radius-xl); }
.rounded-2xl  { border-radius: var(--radius-2xl); }
.rounded-3xl  { border-radius: var(--radius-3xl); }
.rounded-full { border-radius: var(--radius-full); }

.rounded-t-xl { border-top-left-radius: var(--radius-xl); border-top-right-radius: var(--radius-xl); }
.rounded-b-xl { border-bottom-left-radius: var(--radius-xl); border-bottom-right-radius: var(--radius-xl); }

/* Divide Utilities */
.divide-y > :not([hidden]) ~ :not([hidden]) {
    border-top: 1px solid var(--slate-100);
}
.divide-slate-100 > :not([hidden]) ~ :not([hidden]) { border-color: var(--slate-100); }
.divide-slate-200 > :not([hidden]) ~ :not([hidden]) { border-color: var(--slate-200); }
.divide-slate-700 > :not([hidden]) ~ :not([hidden]) { border-color: var(--slate-700); }
.divide-slate-700\/40 > :not([hidden]) ~ :not([hidden]) { border-color: rgba(51, 65, 85, 0.4); }

/* ==========================================================================
   11. Shadows & Effects
   ========================================================================== */
.shadow-none { box-shadow: none; }
.shadow-sm   { box-shadow: var(--shadow-sm); }
.shadow      { box-shadow: var(--shadow); }
.shadow-md   { box-shadow: var(--shadow-md); }
.shadow-lg   { box-shadow: var(--shadow-lg); }
.shadow-xl   { box-shadow: var(--shadow-xl); }
.shadow-2xl  { box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25); }

.transition         { transition: all var(--dur) var(--ease); }
.transition-all     { transition: all var(--dur) var(--ease); }
.transition-colors  { transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease); }
.transition-opacity { transition: opacity var(--dur) var(--ease); }
.duration-200       { transition-duration: 200ms; }
.duration-300       { transition-duration: 300ms; }
.ease-in-out        { transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); }

/* ==========================================================================
   12. Positioning & Layout Helpers
   ========================================================================== */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed    { position: fixed; }
.sticky   { position: sticky; }

.inset-0  { inset: 0; }
.top-0    { top: 0; }
.top-2    { top: 0.5rem; }
.top-4    { top: 1rem; }
.top-6    { top: 1.5rem; }
.top-8    { top: 2rem; }
.top-12   { top: 3rem; }
.top-16   { top: 4rem; }
.top-20   { top: 5rem; }
.top-24   { top: 6rem; }
.bottom-0 { bottom: 0; }
.left-0   { left: 0; }
.right-0  { right: 0; }
.right-4  { right: 1rem; }
.left-3   { left: 0.75rem; }
.right-3  { right: 0.75rem; }
.left-4   { left: 1rem; }
.top-1\/2 { top: 50%; }

.-translate-y-1\/2 { transform: translateY(-50%); }
.-translate-x-1\/2 { transform: translateX(-50%); }
.translate-x-0     { transform: translateX(0px); }
.translate-x-5     { transform: translateX(1.25rem); }

.z-0  { z-index: 0; }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }

.block        { display: block; }
.inline-block { display: inline-block; }
.inline       { display: inline; }
.hidden       { display: none !important; }

.overflow-hidden { overflow: hidden; }
.overflow-auto   { overflow: auto; }
.overflow-x-auto { overflow-x: auto; }
.overflow-y-auto { overflow-y: auto; }
.select-none     { user-select: none; }
.select-all      { user-select: all; }
.cursor-pointer  { cursor: pointer; }
.cursor-grab     { cursor: grab; }
.cursor-grabbing { cursor: grabbing; }
.backdrop-blur-sm{ backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); }

/* ==========================================================================
   13. Form Controls, Option Selections & Buttons
   ========================================================================== */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
input[type="search"],
input[type="url"],
input[type="date"],
input[type="datetime-local"],
select,
textarea,
.form-input,
.form-select,
.form-textarea,
.form-control {
    display: block;
    width: 100%;
    padding: 0.55rem 0.875rem;
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.35;
    color: var(--slate-800);
    background-color: #ffffff;
    background-clip: padding-box;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-xl);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
    outline: none;
    transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background-color var(--dur) var(--ease);
    font-family: inherit;
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
input[type="password"]::placeholder,
input[type="number"]::placeholder,
input[type="tel"]::placeholder,
input[type="search"]::placeholder,
input[type="url"]::placeholder,
textarea::placeholder,
.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--slate-400);
    opacity: 1;
}

input:focus,
select:focus,
textarea:focus,
.form-input:focus,
.form-select:focus,
.form-textarea:focus,
.form-control:focus,
.focus\:ring-2:focus,
.focus\:ring-primary-500\/20:focus {
    border-color: var(--primary-600) !important;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.18) !important;
    background-color: #ffffff;
    outline: none;
}

.focus\:outline-none:focus {
    outline: none;
}
.focus\:ring-0:focus {
    box-shadow: none !important;
}

/* Select & Options */
select,
.form-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem 1rem;
    padding-right: 2.25rem !important;
}

select option,
.form-select option {
    background-color: #ffffff;
    color: var(--slate-800);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 400;
}

/* Textareas */
textarea,
.form-textarea {
    min-height: 80px;
    resize: vertical;
}

/* Checkboxes & Radios */
input[type="checkbox"],
input[type="radio"] {
    width: 1rem;
    height: 1rem;
    accent-color: var(--primary-600);
    cursor: pointer;
    border-radius: 0.25rem;
    vertical-align: middle;
}
input[type="radio"] {
    border-radius: 50%;
}

/* Form Labels & Group */
.form-label,
label.block {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--slate-600);
    margin-bottom: 0.375rem;
}

/* Bot Builder Specific Controls */
.node-textarea {
    display: block;
    width: 100%;
    min-height: 72px;
    border-radius: 0.5rem;
    border: 1px solid var(--slate-300);
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 400;
    line-height: 1.4;
    resize: vertical;
    outline: none;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
    transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
    background-color: #ffffff;
    color: var(--slate-800);
    font-family: inherit;
}
.node-textarea::placeholder {
    color: var(--slate-400);
    opacity: 1;
}
.node-textarea:focus {
    border-color: var(--primary-600) !important;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15) !important;
}

.node-input {
    display: block;
    width: 100%;
    height: 36px;
    border-radius: 0.5rem;
    border: 1px solid var(--slate-300);
    padding: 0.4rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 400;
    line-height: 1.4;
    outline: none;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
    transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
    background-color: #ffffff;
    color: var(--slate-800);
    font-family: inherit;
}
.node-input::placeholder {
    color: var(--slate-400);
    opacity: 1;
}
.node-input:focus {
    border-color: var(--primary-600) !important;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15) !important;
}

.node-select {
    display: block;
    width: 100%;
    height: 36px;
    border-radius: 0.5rem;
    border: 1px solid var(--slate-300);
    padding: 0.4rem 2rem 0.4rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.4;
    outline: none;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-color: #ffffff;
    color: var(--slate-700);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.6rem center;
    background-size: 0.9rem 0.9rem;
    transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
    font-family: inherit;
}
.node-select:focus {
    border-color: var(--primary-600) !important;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15) !important;
}
.node-select option {
    background-color: #ffffff;
    color: var(--slate-800);
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 400;
}

/* Buttons System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.55rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.25;
    border-radius: var(--radius-xl);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--dur) var(--ease);
    text-decoration: none;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
    user-select: none;
}
.btn:hover {
    box-shadow: var(--shadow);
}
.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.55rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.25;
    border-radius: var(--radius-xl);
    background-color: var(--primary-600);
    border: 1px solid var(--primary-600);
    color: #ffffff !important;
    cursor: pointer;
    transition: all var(--dur) var(--ease);
    text-decoration: none;
    white-space: nowrap;
    box-shadow: 0 1px 2px 0 rgba(79, 70, 229, 0.2);
}
.btn-primary:hover {
    background-color: var(--primary-700);
    border-color: var(--primary-700);
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.25);
    color: #ffffff !important;
}
.btn-primary:active {
    background-color: var(--primary-800);
    transform: scale(0.98);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.55rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1.25;
    border-radius: var(--radius-xl);
    background-color: var(--slate-100);
    border: 1px solid var(--slate-200);
    color: var(--slate-700);
    cursor: pointer;
    transition: all var(--dur) var(--ease);
    text-decoration: none;
    white-space: nowrap;
}
.btn-secondary:hover {
    background-color: var(--slate-200);
    color: var(--slate-900);
}
.btn-secondary:active {
    transform: scale(0.98);
}

.btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.55rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-xl);
    background-color: var(--red-600);
    border: 1px solid var(--red-600);
    color: #ffffff !important;
    cursor: pointer;
    transition: all var(--dur) var(--ease);
}
.btn-danger:hover {
    background-color: var(--red-700);
}

.btn-success {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.55rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-xl);
    background-color: var(--emerald-600);
    border: 1px solid var(--emerald-600);
    color: #ffffff !important;
    cursor: pointer;
    transition: all var(--dur) var(--ease);
}
.btn-success:hover {
    background-color: var(--emerald-700);
}

/* ==========================================================================
   14. Tables & Data Grids
   ========================================================================== */
table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th, td {
    vertical-align: middle;
}

/* Card Container */
.card {
    background-color: #ffffff;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   15. App Layout Shell (Sidebar, Topbar, Main)
   ========================================================================== */
#sidebar {
    width: var(--sidebar-w);
    min-width: var(--sidebar-w);
    background: #ffffff;
    border-right: 1px solid var(--slate-200);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    transition: width var(--dur) var(--ease), min-width var(--dur) var(--ease);
    z-index: 40;
}

#sidebar.sidebar-collapsed {
    width: var(--sidebar-w-collapsed);
    min-width: var(--sidebar-w-collapsed);
}
#sidebar.sidebar-collapsed .sidebar-text { display: none; }

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    border-bottom: 1px solid var(--slate-200);
    flex-shrink: 0;
}

.sidebar-logo-icon {
    width: 34px; height: 34px;
    background: linear-gradient(135deg, var(--c-primary), #7c3aed);
    border-radius: var(--radius-lg);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.sidebar-logo-icon svg { width: 18px; height: 18px; fill: #fff; }

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 0.75rem 0.5rem;
}

.sidebar-section {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--slate-400);
    padding: 0.75rem 0.75rem 0.25rem;
    margin-top: 1rem;
}
.sidebar-section:first-child { margin-top: 0; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--slate-600);
    transition: all var(--dur) var(--ease);
    margin-bottom: 1px;
}
.nav-item:hover {
    background: var(--slate-100);
    color: var(--slate-900);
}
.nav-item.active {
    background: var(--primary-50);
    color: var(--primary-600);
    font-weight: 600;
}

.sidebar-footer {
    flex-shrink: 0;
    border-top: 1px solid var(--slate-200);
    padding: 0.75rem;
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--dur) var(--ease);
}
.sidebar-user:hover { background: var(--slate-100); }

#topbar {
    height: var(--topbar-h);
    background: #ffffff;
    border-bottom: 1px solid var(--slate-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
    flex-shrink: 0;
    gap: 1rem;
}

.topbar-btn {
    width: 36px; height: 36px;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--radius);
    color: var(--slate-500);
    transition: all var(--dur) var(--ease);
}
.topbar-btn:hover { background: var(--slate-100); color: var(--slate-800); }
.topbar-btn svg { width: 20px; height: 20px; }

.topbar-search {
    width: 220px;
    padding: 0.4rem 0.75rem 0.4rem 2rem;
    background: var(--slate-100);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius);
    font-size: 0.8125rem;
    color: var(--slate-800);
    outline: none;
    transition: all var(--dur) var(--ease);
}

.page-content {
    flex: 1;
    overflow-y: auto;
    background-color: var(--slate-50);
    padding: 1.5rem;
}

.avatar {
    width: 32px; height: 32px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--c-primary), #7c3aed);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
}

.dropdown {
    position: absolute;
    right: 0; top: calc(100% + 6px);
    background: #ffffff;
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 50;
    overflow: hidden;
    min-width: 200px;
}

.dropdown-item {
    display: flex; align-items: center; gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
    color: var(--slate-700);
    transition: background var(--dur) var(--ease);
}
.dropdown-item:hover { background: var(--slate-50); }

/* Alerts */
.alert {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    position: relative;
}
.alert-success {
    background-color: var(--emerald-50);
    border: 1px solid var(--emerald-200);
    color: var(--emerald-800);
}
.alert-error {
    background-color: var(--red-50);
    border: 1px solid var(--red-200);
    color: var(--red-800);
}
.alert-close {
    margin-left: auto;
    font-size: 1.25rem;
    line-height: 1;
    color: inherit;
    opacity: 0.6;
    cursor: pointer;
}
.alert-close:hover { opacity: 1; }

/* Toast */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.toast {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-xl);
    background: #1e293b;
    color: #fff;
    font-size: 0.875rem;
    box-shadow: var(--shadow-lg);
    animation: toast-in 0.2s ease-out;
}
@keyframes toast-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Modal Dialog */
.custom-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    padding: 1rem;
}
.custom-modal {
    background: #ffffff;
    border-radius: var(--radius-2xl);
    max-width: 28rem;
    width: 100%;
    padding: 1.5rem;
    box-shadow: var(--shadow-xl);
    text-align: center;
    border: 1px solid var(--slate-200);
}

/* ==========================================================================
   16. Dark Mode Variant Classes (Applied when .dark is on html or body)
   ========================================================================== */
.dark .card { background-color: var(--slate-800); border-color: var(--slate-700); }
.dark #sidebar { background: var(--slate-800); border-color: var(--slate-700); }
.dark #topbar { background: var(--slate-800); border-color: var(--slate-700); }
.dark .page-content { background-color: var(--slate-900); }
.dark .dropdown { background: var(--slate-800); border-color: var(--slate-700); }
.dark .dropdown-item { color: var(--slate-200); }
.dark .dropdown-item:hover { background: var(--slate-700); }
.dark .nav-item { color: var(--slate-300); }
.dark .nav-item:hover { background: rgba(255,255,255,0.05); color: #fff; }
.dark .nav-item.active { background: rgba(var(--c-primary-rgb), 0.2); color: #818cf8; }

.dark .dark\:bg-slate-700 { background-color: var(--slate-700); }
.dark .dark\:bg-slate-800 { background-color: var(--slate-800); }
.dark .dark\:bg-slate-900 { background-color: var(--slate-900); }
.dark .dark\:bg-slate-950 { background-color: var(--slate-950); }
.dark .dark\:bg-slate-900\/20 { background-color: rgba(15, 23, 42, 0.2); }
.dark .dark\:bg-slate-900\/40 { background-color: rgba(15, 23, 42, 0.4); }
.dark .dark\:bg-slate-700\/20 { background-color: rgba(51, 65, 85, 0.2); }
.dark .dark\:bg-slate-700\/40 { background-color: rgba(51, 65, 85, 0.4); }
.dark .dark\:bg-slate-700\/50 { background-color: rgba(51, 65, 85, 0.5); }
.dark .dark\:bg-slate-700\/60 { background-color: rgba(51, 65, 85, 0.6); }
.dark .dark\:bg-emerald-900\/20 { background-color: rgba(6, 78, 59, 0.2); }
.dark .dark\:bg-emerald-900\/40 { background-color: rgba(6, 78, 59, 0.4); }
.dark .dark\:bg-emerald-950\/40 { background-color: rgba(2, 44, 34, 0.4); }
.dark .dark\:bg-emerald-950\/60 { background-color: rgba(2, 44, 34, 0.6); }
.dark .dark\:bg-green-900\/30 { background-color: rgba(20, 83, 45, 0.3); }
.dark .dark\:bg-red-900\/20 { background-color: rgba(127, 29, 29, 0.2); }
.dark .dark\:bg-red-900\/40 { background-color: rgba(127, 29, 29, 0.4); }
.dark .dark\:bg-red-950\/30 { background-color: rgba(69, 10, 10, 0.3); }
.dark .dark\:bg-red-950\/40 { background-color: rgba(69, 10, 10, 0.4); }
.dark .dark\:bg-red-950\/60 { background-color: rgba(69, 10, 10, 0.6); }
.dark .dark\:bg-primary-900\/20 { background-color: rgba(49, 46, 129, 0.2); }
.dark .dark\:bg-primary-900\/30 { background-color: rgba(49, 46, 129, 0.3); }
.dark .dark\:bg-primary-900\/40 { background-color: rgba(49, 46, 129, 0.4); }
.dark .dark\:bg-primary-950\/40 { background-color: rgba(30, 27, 75, 0.4); }
.dark .dark\:bg-primary-950\/60 { background-color: rgba(30, 27, 75, 0.6); }
.dark .dark\:bg-blue-900\/20 { background-color: rgba(30, 58, 138, 0.2); }
.dark .dark\:bg-blue-900\/30 { background-color: rgba(30, 58, 138, 0.3); }
.dark .dark\:bg-blue-950\/30 { background-color: rgba(23, 37, 84, 0.3); }
.dark .dark\:bg-purple-900\/30 { background-color: rgba(88, 28, 135, 0.3); }
.dark .dark\:bg-purple-950\/30 { background-color: rgba(59, 7, 100, 0.3); }
.dark .dark\:bg-amber-900\/30 { background-color: rgba(120, 53, 15, 0.3); }
.dark .dark\:bg-amber-950\/30 { background-color: rgba(69, 26, 3, 0.3); }
.dark .dark\:bg-orange-950\/30 { background-color: rgba(67, 20, 7, 0.3); }
.dark .dark\:bg-indigo-950\/30 { background-color: rgba(30, 27, 75, 0.3); }
.dark .dark\:bg-cyan-950\/30 { background-color: rgba(8, 51, 68, 0.3); }
.dark .dark\:bg-fuchsia-950\/30 { background-color: rgba(74, 4, 78, 0.3); }
.dark .dark\:bg-teal-950\/30 { background-color: rgba(4, 47, 46, 0.3); }
.dark .dark\:bg-rose-950\/30 { background-color: rgba(76, 5, 25, 0.3); }

.dark .dark\:border-slate-600 { border-color: var(--slate-600); }
.dark .dark\:border-slate-700 { border-color: var(--slate-700); }
.dark .dark\:border-slate-700\/40 { border-color: rgba(51, 65, 85, 0.4); }
.dark .dark\:border-slate-700\/60 { border-color: rgba(51, 65, 85, 0.6); }
.dark .dark\:border-slate-700\/80 { border-color: rgba(51, 65, 85, 0.8); }
.dark .dark\:border-slate-800 { border-color: var(--slate-800); }
.dark .dark\:border-emerald-800 { border-color: var(--emerald-800); }
.dark .dark\:border-red-800 { border-color: var(--red-800); }
.dark .dark\:border-red-900\/40 { border-color: rgba(127, 29, 29, 0.4); }
.dark .dark\:border-primary-800 { border-color: var(--primary-800); }
.dark .dark\:border-primary-800\/40 { border-color: rgba(55, 48, 163, 0.4); }

.dark .dark\:text-white { color: #ffffff; }
.dark .dark\:text-slate-100 { color: var(--slate-100); }
.dark .dark\:text-slate-200 { color: var(--slate-200); }
.dark .dark\:text-slate-300 { color: var(--slate-300); }
.dark .dark\:text-slate-400 { color: var(--slate-400); }
.dark .dark\:text-slate-500 { color: var(--slate-500); }
.dark .dark\:text-emerald-300 { color: var(--emerald-300); }
.dark .dark\:text-emerald-400 { color: var(--emerald-400); }
.dark .dark\:text-green-300 { color: var(--green-300); }
.dark .dark\:text-green-400 { color: #4ade80; }
.dark .dark\:text-red-300 { color: var(--red-300); }
.dark .dark\:text-red-400 { color: #f87171; }
.dark .dark\:text-blue-300 { color: var(--blue-300); }
.dark .dark\:text-blue-400 { color: var(--blue-400); }
.dark .dark\:text-purple-300 { color: var(--purple-300); }
.dark .dark\:text-purple-400 { color: var(--purple-400); }
.dark .dark\:text-indigo-300 { color: var(--indigo-300); }
.dark .dark\:text-indigo-400 { color: var(--indigo-400); }
.dark .dark\:text-primary-200 { color: var(--primary-200); }
.dark .dark\:text-primary-300 { color: var(--primary-300); }
.dark .dark\:text-amber-400 { color: #fbbf24; }
.dark .dark\:text-sky-400 { color: #38bdf8; }

.dark .dark\:hover\:bg-slate-600:hover { background-color: var(--slate-600); }
.dark .dark\:hover\:bg-slate-700:hover { background-color: var(--slate-700); }
.dark .dark\:hover\:bg-slate-700\/20:hover { background-color: rgba(51, 65, 85, 0.2); }
.dark .dark\:hover\:bg-slate-700\/40:hover { background-color: rgba(51, 65, 85, 0.4); }
.dark .dark\:hover\:bg-slate-800:hover { background-color: var(--slate-800); }
.dark .dark\:hover\:bg-emerald-900\/20:hover { background-color: rgba(6, 78, 59, 0.2); }
.dark .dark\:hover\:bg-red-900\/20:hover { background-color: rgba(127, 29, 29, 0.2); }
.dark .dark\:hover\:bg-red-950\/30:hover { background-color: rgba(69, 10, 10, 0.3); }
.dark .dark\:hover\:bg-sky-950\/50:hover { background-color: rgba(8, 47, 73, 0.5); }
.dark .dark\:hover\:text-white:hover { color: #ffffff; }
.dark .dark\:hover\:text-slate-200:hover { color: var(--slate-200); }
.dark .dark\:hover\:border-slate-600:hover { border-color: var(--slate-600); }

.dark .divide-slate-700 > :not([hidden]) ~ :not([hidden]) { border-color: var(--slate-700); }
.dark .divide-slate-700\/40 > :not([hidden]) ~ :not([hidden]) { border-color: rgba(51, 65, 85, 0.4); }

/* Dark mode inputs and dropdowns */
.dark input[type="text"],
.dark input[type="email"],
.dark input[type="password"],
.dark input[type="number"],
.dark input[type="tel"],
.dark input[type="search"],
.dark input[type="url"],
.dark input[type="date"],
.dark input[type="datetime-local"],
.dark select,
.dark textarea,
.dark .form-input,
.dark .form-select,
.dark .form-textarea,
.dark .form-control,
.dark .node-textarea,
.dark .node-input,
.dark .node-select {
    background-color: var(--slate-900);
    border-color: var(--slate-700);
    color: var(--slate-100);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
}

.dark input::placeholder,
.dark textarea::placeholder,
.dark .form-input::placeholder,
.dark .form-textarea::placeholder,
.dark .node-textarea::placeholder,
.dark .node-input::placeholder {
    color: var(--slate-500);
}

.dark input:focus,
.dark select:focus,
.dark textarea:focus,
.dark .form-input:focus,
.dark .form-select:focus,
.dark .form-textarea:focus,
.dark .node-textarea:focus,
.dark .node-input:focus,
.dark .node-select:focus {
    background-color: var(--slate-800);
    border-color: var(--primary-500) !important;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25) !important;
}

.dark select,
.dark .form-select,
.dark .node-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}

.dark select option,
.dark .form-select option,
.dark .node-select option {
    background-color: var(--slate-800);
    color: var(--slate-100);
}

.dark .form-label,
.dark label.block {
    color: var(--slate-300);
}

.dark .btn-secondary {
    background-color: var(--slate-700);
    border-color: var(--slate-600);
    color: var(--slate-200);
}
.dark .btn-secondary:hover {
    background-color: var(--slate-600);
    color: #ffffff;
}

/* ==========================================================================
   17. Responsive Breakpoints
   ========================================================================== */
@media (max-width: 768px) {
    #sidebar {
        position: fixed; left: 0; top: 0;
        transform: translateX(-100%);
        z-index: 50;
    }
    #sidebar.sidebar-open { transform: translateX(0); }
    .hide-mobile { display: none !important; }
}

/* ==========================================================================
   18. WhatsApp Smartphone Mockup Component
   ========================================================================== */
.wa-phone-frame {
    background-color: #efeae2;
    border: 4px solid #1e293b;
    border-radius: 2.5rem;
    padding: 0.875rem;
    box-shadow: var(--shadow-xl);
    max-width: 360px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    overflow: hidden;
    position: relative;
}
.dark .wa-phone-frame {
    background-color: #0b141a;
    border-color: #334155;
}
.wa-phone-notch {
    width: 90px;
    height: 14px;
    background-color: #1e293b;
    border-radius: var(--radius-full);
    margin: 0 auto 0.5rem auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}
.dark .wa-phone-notch {
    background-color: #334155;
}
.wa-phone-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    background-color: #f0f2f5;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    color: var(--slate-800);
    margin-bottom: 0.75rem;
}
.dark .wa-phone-header {
    background-color: #202c33;
    color: var(--slate-100);
}
.wa-phone-chat-area {
    min-height: 340px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 0.5rem 0.25rem;
}
.wa-phone-bubble {
    background-color: #ffffff;
    border-radius: var(--radius-xl);
    border-top-left-radius: 0.25rem;
    padding: 0.875rem;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.08);
    font-size: 0.8125rem;
    color: var(--slate-800);
}
.dark .wa-phone-bubble {
    background-color: #202c33;
    color: var(--slate-100);
}
.wa-phone-date-pill {
    display: inline-block;
    padding: 0.125rem 0.625rem;
    border-radius: var(--radius-sm);
    background-color: rgba(255, 255, 255, 0.85);
    color: var(--slate-600);
    font-size: 0.625rem;
    font-weight: 600;
    box-shadow: 0 1px 1px 0 rgba(0, 0, 0, 0.05);
}
.dark .wa-phone-date-pill {
    background-color: rgba(32, 44, 51, 0.9);
    color: var(--slate-400);
}
.wa-phone-home-bar {
    width: 100px;
    height: 4px;
    background-color: rgba(148, 163, 184, 0.4);
    border-radius: var(--radius-full);
    margin: 0.75rem auto 0.25rem auto;
}
.wa-variable-badge {
    display: inline-block;
    padding: 0.125rem 0.375rem;
    border-radius: 0.375rem;
    background-color: var(--emerald-100);
    color: var(--emerald-800);
    border: 1px solid var(--emerald-300);
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1.2;
}
.dark .wa-variable-badge {
    background-color: rgba(6, 78, 59, 0.6);
    color: var(--emerald-300);
    border-color: rgba(5, 150, 105, 0.5);
}

/* ==========================================================================
   20. Enterprise Notification System (Toast, Alert, Confirm & Error UI)
   ========================================================================== */

/* --- Toast Container & Toast Cards --- */
.toast-container {
    position: fixed;
    top: 1.25rem;
    right: 1.25rem;
    z-index: 99999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 420px;
    width: calc(100vw - 2.5rem);
    pointer-events: none;
}

@media (max-width: 640px) {
    .toast-container {
        top: auto;
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
        width: auto;
    }
}

.toast {
    position: relative;
    pointer-events: auto;
    display: flex;
    align-items: flex-start;
    gap: 0.875rem;
    padding: 1rem 1.125rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-xl, 1rem);
    border: 1px solid var(--slate-200);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    color: var(--slate-800);
    font-size: 0.875rem;
    line-height: 1.4;
    overflow: hidden;
    transform-origin: top right;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease, filter 0.25s ease;
    animation: toastEnter 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.dark .toast {
    background: rgba(30, 41, 59, 0.95);
    border-color: rgba(51, 65, 85, 0.8);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
    color: var(--slate-100);
}

.toast.toast-exiting {
    animation: toastExit 0.25s cubic-bezier(0.4, 0, 1, 1) forwards;
}

@keyframes toastEnter {
    from {
        opacity: 0;
        transform: translate3d(2rem, 0, 0) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0) scale(1);
    }
}

@keyframes toastExit {
    from {
        opacity: 1;
        transform: translate3d(0, 0, 0) scale(1);
    }
    to {
        opacity: 0;
        transform: translate3d(2rem, 0, 0) scale(0.92);
    }
}

/* Toast Color Variants */
.toast-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 0.75rem;
    flex-shrink: 0;
}

.toast-success .toast-icon {
    background: var(--emerald-100);
    color: var(--emerald-600);
}
.dark .toast-success .toast-icon {
    background: rgba(6, 78, 59, 0.5);
    color: var(--emerald-400);
}
.toast-success {
    border-left: 4px solid var(--emerald-500);
}

.toast-error .toast-icon {
    background: var(--red-100);
    color: var(--red-600);
}
.dark .toast-error .toast-icon {
    background: rgba(127, 29, 29, 0.5);
    color: var(--red-400);
}
.toast-error {
    border-left: 4px solid var(--red-500);
}

.toast-warning .toast-icon {
    background: var(--amber-100);
    color: var(--amber-600);
}
.dark .toast-warning .toast-icon {
    background: rgba(120, 53, 15, 0.5);
    color: var(--amber-400);
}
.toast-warning {
    border-left: 4px solid var(--amber-500);
}

.toast-info .toast-icon {
    background: var(--primary-100);
    color: var(--primary-600);
}
.dark .toast-info .toast-icon {
    background: rgba(49, 46, 129, 0.5);
    color: var(--primary-300);
}
.toast-info {
    border-left: 4px solid var(--primary-500);
}

.toast-content {
    flex: 1;
    min-width: 0;
}

.toast-title {
    font-weight: 700;
    font-size: 0.875rem;
    margin-bottom: 0.125rem;
    color: var(--slate-900);
}
.dark .toast-title {
    color: #ffffff;
}

.toast-message {
    color: var(--slate-600);
    font-size: 0.8125rem;
    word-break: break-word;
}
.dark .toast-message {
    color: var(--slate-300);
}

.toast-close {
    background: transparent;
    border: none;
    color: var(--slate-400);
    cursor: pointer;
    padding: 0.25rem;
    margin-top: -0.25rem;
    margin-right: -0.25rem;
    border-radius: var(--radius-sm, 0.375rem);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.15s, background-color 0.15s;
    font-size: 1.125rem;
    line-height: 1;
}
.toast-close:hover {
    color: var(--slate-700);
    background: var(--slate-100);
}
.dark .toast-close:hover {
    color: var(--slate-200);
    background: var(--slate-700);
}

.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    width: 100%;
    background: rgba(0, 0, 0, 0.08);
    overflow: hidden;
}
.dark .toast-progress {
    background: rgba(255, 255, 255, 0.1);
}

.toast-progress-bar {
    height: 100%;
    width: 100%;
    transform-origin: left;
    animation: toastTimer linear forwards;
}

.toast-success .toast-progress-bar { background: var(--emerald-500); }
.toast-error .toast-progress-bar { background: var(--red-500); }
.toast-warning .toast-progress-bar { background: var(--amber-500); }
.toast-info .toast-progress-bar { background: var(--primary-500); }

@keyframes toastTimer {
    from { transform: scaleX(1); }
    to { transform: scaleX(0); }
}

/* --- Inline Alert Banners --- */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 0.875rem;
    padding: 0.875rem 1.125rem;
    border-radius: var(--radius-lg, 0.75rem);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 1.25rem;
    border: 1px solid transparent;
    position: relative;
    transition: opacity 0.25s ease, transform 0.25s ease, max-height 0.25s ease, margin 0.25s ease;
    overflow: hidden;
}

.alert-icon {
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.alert-body {
    flex: 1;
    min-width: 0;
}

.alert-title {
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.alert-close {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 1.25rem;
    line-height: 1;
    color: currentColor;
    opacity: 0.6;
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm, 0.375rem);
    margin-top: -0.125rem;
    margin-right: -0.25rem;
    transition: opacity 0.15s, background-color 0.15s;
}
.alert-close:hover {
    opacity: 1;
    background: rgba(0, 0, 0, 0.05);
}
.dark .alert-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.alert-success {
    background-color: var(--emerald-50);
    border-color: var(--emerald-200);
    color: var(--emerald-800);
}
.dark .alert-success {
    background-color: rgba(6, 78, 59, 0.35);
    border-color: rgba(5, 150, 105, 0.4);
    color: var(--emerald-300);
}

.alert-error,
.alert-danger {
    background-color: var(--red-50);
    border-color: var(--red-200);
    color: var(--red-800);
}
.dark .alert-error,
.dark .alert-danger {
    background-color: rgba(127, 29, 29, 0.35);
    border-color: rgba(220, 38, 38, 0.4);
    color: var(--red-300);
}

.alert-warning {
    background-color: var(--amber-50);
    border-color: var(--amber-200);
    color: var(--amber-900);
}
.dark .alert-warning {
    background-color: rgba(120, 53, 15, 0.35);
    border-color: rgba(217, 119, 6, 0.4);
    color: var(--amber-300);
}

.alert-info {
    background-color: var(--primary-50);
    border-color: var(--primary-200);
    color: var(--primary-900);
}
.dark .alert-info {
    background-color: rgba(49, 46, 129, 0.35);
    border-color: rgba(99, 102, 241, 0.4);
    color: var(--primary-300);
}

.alert-list {
    margin: 0.5rem 0 0 1.25rem;
    padding: 0;
    list-style-type: disc;
    font-size: 0.8125rem;
}
.alert-list li {
    margin-bottom: 0.25rem;
}

.alert.alert-closing {
    opacity: 0;
    transform: scale(0.97);
    max-height: 0;
    margin-top: 0;
    margin-bottom: 0;
    padding-top: 0;
    padding-bottom: 0;
}

/* --- Modal Dialog & Confirm Box (Replaces Browser Prompts & SweetAlert) --- */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
    opacity: 0;
    transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-backdrop.show {
    opacity: 1;
}

.modal-box {
    background: var(--c-surface, #ffffff);
    color: var(--c-body-text, #1e293b);
    border: 1px solid var(--c-border, #e2e8f0);
    border-radius: 1.25rem;
    padding: 1.75rem;
    max-width: 440px;
    width: 100%;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(0, 0, 0, 0.05);
    text-align: center;
    transform: scale(0.92) translateY(10px);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.modal-backdrop.show .modal-box {
    transform: scale(1) translateY(0);
}

.modal-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    margin: 0 auto 1.25rem auto;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.modal-icon.success {
    background: var(--emerald-100);
    color: var(--emerald-600);
}
.dark .modal-icon.success {
    background: rgba(6, 78, 59, 0.5);
    color: var(--emerald-400);
}

.modal-icon.danger,
.modal-icon.error {
    background: var(--red-100);
    color: var(--red-600);
}
.dark .modal-icon.danger,
.dark .modal-icon.error {
    background: rgba(127, 29, 29, 0.5);
    color: var(--red-400);
}

.modal-icon.warning {
    background: var(--amber-100);
    color: var(--amber-600);
}
.dark .modal-icon.warning {
    background: rgba(120, 53, 15, 0.5);
    color: var(--amber-400);
}

.modal-icon.info {
    background: var(--primary-100);
    color: var(--primary-600);
}
.dark .modal-icon.info {
    background: rgba(49, 46, 129, 0.5);
    color: var(--primary-300);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--c-body-text, #1e293b);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}
.dark .modal-title {
    color: #ffffff;
}

.modal-text {
    font-size: 0.875rem;
    color: var(--c-muted, #64748b);
    line-height: 1.5;
    margin-bottom: 1.5rem;
}

.modal-input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    border-radius: var(--radius-md, 0.5rem);
    border: 1px solid var(--c-border, #cbd5e1);
    background: var(--c-surface, #ffffff);
    color: var(--c-body-text, #1e293b);
    margin-bottom: 1.5rem;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.modal-input:focus {
    border-color: var(--c-primary, #4f46e5);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.modal-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.modal-actions .btn {
    flex: 1;
    min-height: 2.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-lg, 0.75rem);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
}

.modal-actions .btn:active {
    transform: scale(0.98);
}

.modal-actions .btn-danger {
    background: var(--red-600);
    color: #ffffff;
    border: 1px solid var(--red-700);
}
.modal-actions .btn-danger:hover {
    background: var(--red-700);
}

/* --- Form Field Error States --- */
.input-error,
.form-input-error,
.form-input.is-invalid,
.input-field.is-invalid {
    border-color: var(--red-500) !important;
    background-color: var(--red-50) !important;
}
.dark .input-error,
.dark .form-input-error,
.dark .form-input.is-invalid,
.dark .input-field.is-invalid {
    border-color: var(--red-600) !important;
    background-color: rgba(127, 29, 29, 0.15) !important;
}

.input-error:focus,
.form-input-error:focus,
.form-input.is-invalid:focus,
.input-field.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.25) !important;
}

.field-error {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.75rem;
    color: var(--red-600);
    margin-top: 0.375rem;
    font-weight: 500;
}
.dark .field-error {
    color: var(--red-400);
}

@keyframes shakeError {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-4px); }
    40%, 80% { transform: translateX(4px); }
}

.shake-on-error {
    animation: shakeError 0.4s ease-in-out;
}