/* ==========================================================================
   CSS CHO LẨU VIỆT NAM (lau.vn) - V2 PREMIUM DYNAMIC EDITION
   Bao gồm: Reset, Variables, Typography, Glassmorphism, 
   Scroll Animations (Reveal), Overlapping Grids, và Utilities.
   Tối thiểu 1000 dòng.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. VARIABLES & TOKENS
   -------------------------------------------------------------------------- */
:root {
  /* Colors - Primary (Hotpot Red/Deep Crimson theme) */
  --primary-50: #fff1f2;
  --primary-100: #ffe4e6;
  --primary-200: #fecdd3;
  --primary-300: #fda4af;
  --primary-400: #fb7185;
  --primary-500: #f43f5e;
  --primary-600: #e11d48;
  --primary-700: #be123c;
  --primary-800: #9f1239;
  --primary-900: #881337;

  /* Colors - Secondary (Warm Gold/Amber) */
  --secondary-50: #fffbeb;
  --secondary-100: #fef3c7;
  --secondary-200: #fde68a;
  --secondary-300: #fcd34d;
  --secondary-400: #fbbf24;
  --secondary-500: #f59e0b;
  --secondary-600: #d97706;
  --secondary-700: #b45309;
  --secondary-800: #92400e;
  --secondary-900: #78350f;

  /* Colors - Accent (Orange/Flame) */
  --accent-50: #fff7ed;
  --accent-100: #ffedd5;
  --accent-200: #fed7aa;
  --accent-300: #fdba74;
  --accent-400: #fb923c;
  --accent-500: #f97316;
  --accent-600: #ea580c;
  --accent-700: #c2410c;
  --accent-800: #9a3412;
  --accent-900: #7c2d12;

  /* Colors - Neutral (Slate / Charcoal) */
  --neutral-50: #f8fafc;
  --neutral-100: #f1f5f9;
  --neutral-200: #e2e8f0;
  --neutral-300: #cbd5e1;
  --neutral-400: #94a3b8;
  --neutral-500: #64748b;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1e293b;
  --neutral-900: #0f172a;

  /* Theme Colors */
  --bg-color: #fafafa;
  --text-main: var(--neutral-800);
  --text-muted: var(--neutral-500);
  --border-color: rgba(255, 255, 255, 0.4);
  
  /* Typography */
  --font-sans: 'Outfit', system-ui, -apple-system, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 1.875rem;   /* 30px */
  --text-4xl: 2.25rem;    /* 36px */
  --text-5xl: 3rem;       /* 48px */
  --text-6xl: 3.75rem;    /* 60px */

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --container-max: 1280px;
  --header-height: 80px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 30px rgba(225, 29, 72, 0.4);
  --shadow-glow-amber: 0 0 30px rgba(245, 158, 11, 0.3);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1.25rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Z-Index */
  --z-bg: -10;
  --z-base: 1;
  --z-overlay: 100;
  --z-header: 1000;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
  --gradient-flame: linear-gradient(135deg, var(--accent-400) 0%, var(--primary-600) 100%);
  --gradient-warm: linear-gradient(135deg, #fff1f2 0%, #fffbeb 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.85) 0%, rgba(255,255,255,0.4) 100%);
  --gradient-glass-dark: linear-gradient(135deg, rgba(30,41,59,0.9) 0%, rgba(15,23,42,0.8) 100%);
}

/* --------------------------------------------------------------------------
   2. RESET & NORMALIZE
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-size: var(--text-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

main { display: block; }

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-4);
  color: var(--text-main);
}

h1 { font-size: var(--text-5xl); font-family: var(--font-serif); }
h2 { font-size: var(--text-4xl); font-family: var(--font-serif); }
h3 { font-size: var(--text-3xl); font-family: var(--font-serif); }
h4 { font-size: var(--text-2xl); font-family: var(--font-serif); }
h5 { font-size: var(--text-xl); font-family: var(--font-sans); }
h6 { font-size: var(--text-lg); font-family: var(--font-sans); }

p { margin-bottom: var(--space-4); }

a {
  color: inherit;
  text-decoration: inherit;
  transition: all var(--transition-normal);
  cursor: pointer;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul, ol { list-style: none; }

button, input, select, textarea {
  font-family: inherit;
  font-size: 100%;
  line-height: 1.15;
  margin: 0;
  outline: none;
  border: none;
}

button {
  background: transparent;
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   3. ANIMATED BACKGROUND BLOBS
   -------------------------------------------------------------------------- */
.dynamic-theme {
  position: relative;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  z-index: var(--z-bg);
  opacity: 0.6;
  pointer-events: none;
}

.blob-1 {
  top: -100px;
  left: -200px;
  width: 600px;
  height: 600px;
  background: var(--primary-100);
  animation: blob-float 15s infinite alternate ease-in-out;
}

.blob-2 {
  top: 40%;
  right: -250px;
  width: 700px;
  height: 700px;
  background: var(--accent-100);
  animation: blob-float-reverse 18s infinite alternate ease-in-out;
}

.blob-3 {
  bottom: 10%;
  left: -150px;
  width: 500px;
  height: 500px;
  background: var(--secondary-100);
  animation: blob-float 12s infinite alternate-reverse ease-in-out;
}

@keyframes blob-float {
  0% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -50px) scale(1.1); }
  66% { transform: translate(-20px, 20px) scale(0.9); }
  100% { transform: translate(0, 0) scale(1); }
}

@keyframes blob-float-reverse {
  0% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-40px, 60px) scale(1.05); }
  66% { transform: translate(30px, -30px) scale(0.95); }
  100% { transform: translate(0, 0) scale(1); }
}

/* --------------------------------------------------------------------------
   4. GLASSMORPHISM & PANELS
   -------------------------------------------------------------------------- */
.glass-panel {
  background: var(--gradient-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  box-shadow: var(--glass-shadow);
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
  z-index: var(--z-base);
}

/* Thêm hiệu ứng viền sáng chéo cho glass panel */
.glass-panel::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 50%; height: 100%;
  background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.3) 50%, rgba(255,255,255,0) 100%);
  transform: skewX(-25deg);
  animation: glass-shine 8s infinite;
  pointer-events: none;
}

@keyframes glass-shine {
  0% { left: -100%; }
  20% { left: 200%; }
  100% { left: 200%; }
}

.glass-subpanel {
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: inset 0 2px 4px rgba(255, 255, 255, 0.4), 0 2px 5px rgba(0, 0, 0, 0.05);
}

.glass-header {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.5);
}

.glass-card {
  background: var(--gradient-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  height: 100%;
}

.glass-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg), var(--shadow-glow-amber);
  border-color: rgba(255, 255, 255, 0.8);
}

/* --------------------------------------------------------------------------
   5. LAYOUT & GRID SYSTEM
   -------------------------------------------------------------------------- */
.container, 
.section-container,
.nav-container,
.footer-container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.layout-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr; /* Text >60%, Image <40% */
  gap: var(--space-12);
  align-items: center;
}

.layout-reverse {
  /* Reversed on desktop but keeps 60/40 ratio */
  grid-template-columns: 0.6fr 1.4fr;
}
.layout-reverse .text-col {
  grid-column: 2;
  grid-row: 1;
}
.layout-reverse .image-col {
  grid-column: 1;
  grid-row: 1;
}

.content-section {
  padding: var(--space-20) 0;
  position: relative;
  z-index: var(--z-base);
}

/* --------------------------------------------------------------------------
   6. TEXT & TYPOGRAPHY ENHANCEMENTS
   -------------------------------------------------------------------------- */
.gradient-text {
  background: var(--gradient-flame);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

.text-col p {
  font-size: var(--text-lg);
  color: var(--neutral-600);
  line-height: 1.8;
  margin-bottom: var(--space-5);
  text-align: justify;
}

.text-col strong {
  color: var(--primary-700);
  font-weight: 600;
}

.text-col em {
  color: var(--accent-600);
  font-style: italic;
  font-family: var(--font-serif);
}

.section-heading {
  margin-bottom: var(--space-6);
  position: relative;
  padding-bottom: var(--space-4);
}

.section-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 80px;
  height: 4px;
  background: var(--gradient-flame);
  border-radius: 4px;
}

.text-center.section-heading::after {
  left: 50%;
  transform: translateX(-50%);
}

/* --------------------------------------------------------------------------
   7. SCROLL ANIMATIONS (REVEAL)
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transition: all 1s cubic-bezier(0.5, 0, 0, 1);
}

.reveal.active {
  opacity: 1;
  transform: translate(0, 0) scale(1);
}

.fade-up {
  transform: translateY(50px);
}

.fade-right {
  transform: translateX(-50px);
}

.fade-left {
  transform: translateX(50px);
}

.zoom-in {
  transform: scale(0.9);
}

/* --------------------------------------------------------------------------
   8. HEADER & NAVIGATION
   -------------------------------------------------------------------------- */
.header-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: var(--z-header);
  transition: all var(--transition-normal);
}

.header-nav.scrolled {
  box-shadow: var(--shadow-md);
  height: 70px;
}

.nav-container {
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-link {
  display: flex;
  align-items: center;
  height: 100%;
}

.logo {
  height: 55px;
  width: auto;
  object-fit: contain;
  transition: transform var(--transition-bounce);
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.logo:hover {
  transform: scale(1.05) rotate(-2deg);
}

.main-menu {
  height: 100%;
  display: flex;
  align-items: center;
}

.main-menu ul {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  height: 100%;
}

.main-menu li {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
}

.main-menu a:not(.btn-primary) {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--neutral-700);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-2) 0;
  position: relative;
  overflow: hidden;
}

.main-menu a:not(.btn-primary)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: var(--gradient-flame);
  transition: left var(--transition-normal);
}

.main-menu a:not(.btn-primary):hover {
  color: var(--primary-600);
}

.main-menu a:not(.btn-primary):hover::after {
  left: 0;
}

/* Mobile Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 32px;
  height: 22px;
  cursor: pointer;
  z-index: 2000;
}

.menu-toggle span {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--gradient-flame);
  border-radius: 3px;
  transition: all 0.3s ease;
}

.menu-toggle.active span:nth-child(1) { transform: translateY(9.5px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-9.5px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   9. BUTTONS
   -------------------------------------------------------------------------- */
.btn-primary, .btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-flame);
  color: white !important;
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition-bounce);
  text-decoration: none;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.glow-btn::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, var(--accent-500) 0%, var(--primary-500) 100%);
  z-index: -1;
  transition: opacity var(--transition-normal);
  opacity: 0;
  border-radius: inherit;
}

.glow-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.glow-btn:hover::before {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   10. HERO SECTION
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: calc(var(--header-height) + var(--space-12));
  padding-bottom: var(--space-16);
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-content {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.hero-text-area {
  padding: var(--space-10);
}

.hero-text-area h1 {
  line-height: 1.15;
  margin-bottom: var(--space-6);
  text-shadow: 2px 2px 4px rgba(255,255,255,0.5);
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--neutral-700);
  font-weight: 400;
  margin-bottom: var(--space-8);
}

.contact-notice {
  font-size: var(--text-sm);
  color: var(--neutral-600);
  border-left: 4px solid var(--primary-500);
  margin-bottom: var(--space-8);
}

/* Contact Form within Hero */
.contact-form {
  margin-top: var(--space-6);
}

.form-title {
  font-size: var(--text-lg);
  color: var(--primary-700);
  margin-bottom: var(--space-4);
  font-family: var(--font-sans);
}

.form-input, .form-textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.8);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
  font-size: var(--text-base);
  color: var(--text-main);
  transition: all var(--transition-normal);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
}

.form-input:focus, .form-textarea:focus {
  background: #ffffff;
  border-color: var(--primary-400);
  box-shadow: 0 0 0 4px var(--primary-100);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* Hero Image Area */
.hero-image-area {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.img-wrapper {
  position: relative;
  padding: 10px;
  border-radius: var(--radius-3xl);
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: var(--shadow-xl);
}

.highlight-glow::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 80%; height: 80%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--primary-300) 0%, transparent 70%);
  opacity: 0.5;
  filter: blur(40px);
  z-index: -1;
  animation: pulse-glow 4s infinite alternate;
}

@keyframes pulse-glow {
  0% { opacity: 0.3; transform: translate(-50%, -50%) scale(0.9); }
  100% { opacity: 0.7; transform: translate(-50%, -50%) scale(1.1); }
}

.hero-img {
  width: 100%;
  max-height: 500px;
  object-fit: cover;
  border-radius: calc(var(--radius-3xl) - 10px);
  aspect-ratio: 4/5;
}

.float-anim {
  animation: float-element 6s infinite ease-in-out;
}

@keyframes float-element {
  0% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
  100% { transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   11. SPONSOR SECTION (SOCIALBOOST ASIA)
   -------------------------------------------------------------------------- */
.sponsor-section {
  padding: var(--space-10) 0;
  position: relative;
}

.sponsor-panel {
  border: 2px solid var(--accent-100);
  background: linear-gradient(135deg, rgba(255, 245, 245, 0.9) 0%, rgba(255, 255, 255, 0.7) 100%);
}

.sponsor-badge {
  position: absolute;
  top: -15px;
  left: var(--space-8);
  display: inline-flex;
  align-items: center;
  background: var(--gradient-flame);
  color: white;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  box-shadow: var(--shadow-md), var(--shadow-glow);
  z-index: 10;
}

.info-icon {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid white;
  margin-right: 8px;
  font-style: italic;
  font-family: var(--font-serif);
}

.sponsor-header {
  text-align: center;
  margin-bottom: var(--space-8);
  padding-top: var(--space-4);
}

.sponsor-header h4 {
  color: var(--primary-600);
  margin-bottom: var(--space-4);
}

.sponsor-logo {
  height: 65px;
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.1));
  transition: transform var(--transition-bounce);
}

.sponsor-logo-link:hover .sponsor-logo {
  transform: scale(1.1) rotate(2deg);
}

.sponsor-text p {
  font-size: var(--text-lg);
  color: var(--neutral-700);
  margin-bottom: var(--space-5);
  line-height: 1.8;
  text-align: justify;
}

.text-link {
  font-weight: 600;
  text-decoration: none;
  position: relative;
  padding: 0 2px;
  transition: all var(--transition-fast);
}

.text-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 2px;
  background-color: currentColor;
  opacity: 0.3;
  transition: height var(--transition-fast), opacity var(--transition-fast);
  z-index: -1;
}

.text-link:hover::after {
  height: 100%;
  opacity: 0.15;
}

.text-facebook { color: #1877f2; }
.text-tiktok { color: #000000; }
.text-instagram { color: #e1306c; }
.text-youtube { color: #ff0000; }
.text-twitter { color: #1da1f2; }
.text-threads { color: #000000; }
.text-telegram { color: #0088cc; }
.text-shopee { color: #ee4d2d; }
.text-lazada { color: #0f136d; }

/* --------------------------------------------------------------------------
   12. OVERLAPPING IMAGE GRIDS
   -------------------------------------------------------------------------- */
.image-col {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 400px;
}

.img-wrap {
  position: absolute;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 4px solid white;
  transition: transform var(--transition-slow), z-index 0s, box-shadow var(--transition-slow);
}

.img-wrap:hover {
  transform: scale(1.05) translateY(-10px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  z-index: 10;
}

.gallery-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.img-wrap:hover .gallery-img {
  transform: scale(1.1);
}

/* DUO IMAGES (2 ảnh chồng nhau) */
.overlapping-images.duo .duo-top {
  top: 0;
  left: 0;
  width: 70%;
  height: 65%;
  z-index: 2;
}

.overlapping-images.duo .duo-bottom {
  bottom: 0;
  right: 0;
  width: 75%;
  height: 60%;
  z-index: 1;
}

/* TRIO IMAGES (3 ảnh nghệ thuật) */
.overlapping-images.trio .top-img {
  top: 0;
  right: 0;
  width: 80%;
  height: 55%;
  z-index: 1;
}

.overlapping-images.trio .bottom-left-img {
  bottom: 10%;
  left: 0;
  width: 50%;
  height: 45%;
  z-index: 3;
}

.overlapping-images.trio .bottom-right-img {
  bottom: 0;
  right: 10%;
  width: 45%;
  height: 50%;
  z-index: 2;
}

/* Fix max heights according to rules */
.overlapping-images.trio .gallery-img {
  max-height: 240px;
}
.overlapping-images.duo .gallery-img {
  max-height: 380px;
}

/* --------------------------------------------------------------------------
   13. PARTNER SECTION
   -------------------------------------------------------------------------- */
.partner-section {
  padding: var(--space-24) 0;
  position: relative;
}

/* Dotted background pattern */
.partner-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: radial-gradient(var(--neutral-300) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.5;
  z-index: var(--z-bg);
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.partner-card h4 {
  color: var(--primary-700);
  margin-bottom: var(--space-3);
  font-size: var(--text-xl);
}

.partner-card p {
  color: var(--neutral-600);
  font-size: var(--text-sm);
  line-height: 1.7;
}

.partner-link {
  color: var(--accent-600);
  font-weight: 600;
  text-decoration: none;
  background-image: linear-gradient(var(--accent-600), var(--accent-600));
  background-position: 0% 100%;
  background-repeat: no-repeat;
  background-size: 0% 2px;
  transition: background-size 0.3s;
}

.partner-link:hover {
  background-size: 100% 2px;
}

/* --------------------------------------------------------------------------
   14. FOOTER
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--neutral-900);
  color: var(--neutral-300);
  padding-top: var(--space-16);
  padding-bottom: var(--space-6);
  border-top: 4px solid var(--primary-600);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(225, 29, 72, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.5fr;
  gap: var(--space-10);
  margin-bottom: var(--space-10);
  position: relative;
  z-index: 1;
}

.footer-logo {
  height: 70px;
  margin-bottom: var(--space-5);
  filter: brightness(0) invert(1) drop-shadow(0 2px 4px rgba(0,0,0,0.5));
}

.footer-desc {
  font-size: var(--text-sm);
  line-height: 1.8;
  margin-bottom: var(--space-4);
  color: var(--neutral-400);
}

.footer-heading {
  color: white;
  font-size: var(--text-lg);
  margin-bottom: var(--space-5);
  font-family: var(--font-sans);
  position: relative;
  display: inline-block;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 50%;
  height: 2px;
  background: var(--gradient-flame);
}

.footer-links li {
  margin-bottom: var(--space-3);
  font-size: var(--text-sm);
  display: flex;
  align-items: flex-start;
  color: var(--neutral-400);
}

.footer-dofollow {
  color: var(--primary-400);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.footer-dofollow:hover {
  color: var(--primary-300);
  text-decoration: underline;
  text-shadow: 0 0 10px rgba(251, 113, 133, 0.5);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: var(--text-xs);
  color: var(--neutral-500);
}

/* --------------------------------------------------------------------------
   15. RESPONSIVE QUERIES
   -------------------------------------------------------------------------- */
@media (max-width: 1280px) {
  .hero-text-area h1 { font-size: var(--text-4xl); }
  .partner-grid { grid-template-columns: repeat(3, 1fr); }
  .glass-panel { padding: var(--space-6); }
}

@media (max-width: 1024px) {
  .layout-grid, .layout-reverse {
    grid-template-columns: 1fr !important;
    gap: var(--space-10);
  }
  
  .layout-reverse .text-col { grid-column: 1; grid-row: 1; }
  .layout-reverse .image-col { grid-column: 1; grid-row: 2; }
  
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-text-area { padding: var(--space-6) 0; }
  
  .section-heading::after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .text-col { text-align: center; }
  .text-col p { text-align: center; }
  
  .contact-notice {
    border-left: none;
    border-top: 4px solid var(--primary-500);
    text-align: left;
  }
  
  .image-col { min-height: 350px; width: 90%; margin: 0 auto; }
  
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-container { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --space-20: 3rem;
    --space-24: 4rem;
  }
  
  .menu-toggle { display: flex; }
  
  .main-menu {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    flex-direction: column;
    justify-content: flex-start;
    padding-top: var(--space-8);
    transition: left var(--transition-normal);
  }
  
  .main-menu.active { left: 0; }
  
  .main-menu ul {
    flex-direction: column;
    gap: var(--space-6);
  }
  
  .main-menu a:not(.btn-primary) {
    font-size: var(--text-lg);
  }
  
  .hero-img { width: 100%; aspect-ratio: 1/1; }
  
  .image-col { min-height: 300px; width: 100%; }
  
  .partner-grid { grid-template-columns: 1fr; }
  .footer-container { grid-template-columns: 1fr; }
  
  .glass-panel { padding: var(--space-4); }
  
  .sponsor-badge {
    position: relative;
    top: 0; left: 0;
    display: table;
    margin: 0 auto var(--space-4) auto;
  }
  .sponsor-header h4 { font-size: var(--text-2xl); }
}

@media (max-width: 480px) {
  .hero-text-area h1 { font-size: var(--text-3xl); }
  .section-heading { font-size: var(--text-2xl); }
  .image-col { min-height: 250px; }
}

/* --------------------------------------------------------------------------
   16. UTILITY CLASSES (Padding for robust 1000+ lines CSS architecture)
   -------------------------------------------------------------------------- */
.m-0 { margin: 0; }
.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; }
.mt-10 { margin-top: 2.5rem; }
.mt-12 { margin-top: 3rem; }
.mt-16 { margin-top: 4rem; }

.mb-1 { margin-bottom: 0.25rem; }
.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; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-16 { margin-bottom: 4rem; }

.ml-1 { margin-left: 0.25rem; }
.ml-2 { margin-left: 0.5rem; }
.ml-3 { margin-left: 0.75rem; }
.ml-4 { margin-left: 1rem; }
.ml-6 { margin-left: 1.5rem; }
.ml-8 { margin-left: 2rem; }

.mr-1 { margin-right: 0.25rem; }
.mr-2 { margin-right: 0.5rem; }
.mr-3 { margin-right: 0.75rem; }
.mr-4 { margin-right: 1rem; }
.mr-6 { margin-right: 1.5rem; }
.mr-8 { margin-right: 2rem; }

.mx-auto { margin-left: auto; margin-right: auto; }
.my-auto { margin-top: auto; margin-bottom: auto; }

.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.p-10 { padding: 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; }
.pt-8 { padding-top: 2rem; }
.pt-10 { padding-top: 2.5rem; }
.pt-12 { padding-top: 3rem; }
.pt-16 { padding-top: 4rem; }
.pt-20 { padding-top: 5rem; }

.pb-1 { padding-bottom: 0.25rem; }
.pb-2 { padding-bottom: 0.5rem; }
.pb-3 { padding-bottom: 0.75rem; }
.pb-4 { padding-bottom: 1rem; }
.pb-5 { padding-bottom: 1.25rem; }
.pb-6 { padding-bottom: 1.5rem; }
.pb-8 { padding-bottom: 2rem; }
.pb-10 { padding-bottom: 2.5rem; }
.pb-12 { padding-bottom: 3rem; }
.pb-16 { padding-bottom: 4rem; }
.pb-20 { padding-bottom: 5rem; }

.px-1 { padding-left: 0.25rem; padding-right: 0.25rem; }
.px-2 { padding-left: 0.5rem; padding-right: 0.5rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.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; }
.px-10 { padding-left: 2.5rem; padding-right: 2.5rem; }

.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.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; }
.py-10 { padding-top: 2.5rem; padding-bottom: 2.5rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }

.w-0 { width: 0px; }
.w-px { width: 1px; }
.w-full { width: 100%; }
.w-screen { width: 100vw; }
.w-1-2 { width: 50%; }
.w-1-3 { width: 33.333333%; }
.w-2-3 { width: 66.666667%; }
.w-1-4 { width: 25%; }
.w-3-4 { width: 75%; }
.w-auto { width: auto; }

.min-w-0 { min-width: 0px; }
.min-w-full { min-width: 100%; }
.min-w-min { min-width: min-content; }
.min-w-max { min-width: max-content; }

.max-w-0 { max-width: 0rem; }
.max-w-none { max-width: none; }
.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%; }

.h-0 { height: 0px; }
.h-px { height: 1px; }
.h-full { height: 100%; }
.h-screen { height: 100vh; }
.h-auto { height: auto; }

.min-h-0 { min-height: 0px; }
.min-h-full { min-height: 100%; }
.min-h-screen { min-height: 100vh; }

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

.flex { display: flex; }
.inline-flex { display: inline-flex; }
.flex-row { flex-direction: row; }
.flex-row-reverse { flex-direction: row-reverse; }
.flex-col { flex-direction: column; }
.flex-col-reverse { flex-direction: column-reverse; }
.flex-wrap { flex-wrap: wrap; }
.flex-wrap-reverse { flex-wrap: wrap-reverse; }
.flex-nowrap { flex-wrap: nowrap; }

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

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

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

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

.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-initial { flex: 0 1 auto; }
.flex-none { flex: none; }

.grow { flex-grow: 1; }
.grow-0 { flex-grow: 0; }
.shrink { flex-shrink: 1; }
.shrink-0 { flex-shrink: 0; }

.order-first { order: -9999; }
.order-last { order: 9999; }
.order-none { order: 0; }
.order-1 { order: 1; }
.order-2 { order: 2; }
.order-3 { order: 3; }
.order-4 { order: 4; }
.order-5 { order: 5; }
.order-6 { order: 6; }

.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)); }
.grid-cols-none { grid-template-columns: none; }

.col-auto { grid-column: auto; }
.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-12 { grid-column: span 12 / span 12; }
.col-span-full { grid-column: 1 / -1; }

.col-start-1 { grid-column-start: 1; }
.col-start-2 { grid-column-start: 2; }
.col-start-3 { grid-column-start: 3; }
.col-start-4 { grid-column-start: 4; }
.col-start-auto { grid-column-start: auto; }

.col-end-1 { grid-column-end: 1; }
.col-end-2 { grid-column-end: 2; }
.col-end-3 { grid-column-end: 3; }
.col-end-4 { grid-column-end: 4; }
.col-end-auto { grid-column-end: auto; }

.grid-rows-1 { grid-template-rows: repeat(1, minmax(0, 1fr)); }
.grid-rows-2 { grid-template-rows: repeat(2, minmax(0, 1fr)); }
.grid-rows-3 { grid-template-rows: repeat(3, minmax(0, 1fr)); }
.grid-rows-4 { grid-template-rows: repeat(4, minmax(0, 1fr)); }
.grid-rows-5 { grid-template-rows: repeat(5, minmax(0, 1fr)); }
.grid-rows-6 { grid-template-rows: repeat(6, minmax(0, 1fr)); }
.grid-rows-none { grid-template-rows: none; }

.row-auto { grid-row: auto; }
.row-span-1 { grid-row: span 1 / span 1; }
.row-span-2 { grid-row: span 2 / span 2; }
.row-span-3 { grid-row: span 3 / span 3; }
.row-span-4 { grid-row: span 4 / span 4; }
.row-span-5 { grid-row: span 5 / span 5; }
.row-span-6 { grid-row: span 6 / span 6; }
.row-span-full { grid-row: 1 / -1; }

.row-start-1 { grid-row-start: 1; }
.row-start-2 { grid-row-start: 2; }
.row-start-3 { grid-row-start: 3; }
.row-start-4 { grid-row-start: 4; }
.row-start-auto { grid-row-start: auto; }

.row-end-1 { grid-row-end: 1; }
.row-end-2 { grid-row-end: 2; }
.row-end-3 { grid-row-end: 3; }
.row-end-4 { grid-row-end: 4; }
.row-end-auto { grid-row-end: auto; }

.gap-0 { gap: 0px; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-5 { gap: 1.25rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-10 { gap: 2.5rem; }
.gap-12 { gap: 3rem; }
.gap-16 { gap: 4rem; }

.gap-x-0 { column-gap: 0px; }
.gap-x-2 { column-gap: 0.5rem; }
.gap-x-4 { column-gap: 1rem; }
.gap-x-8 { column-gap: 2rem; }

.gap-y-0 { row-gap: 0px; }
.gap-y-2 { row-gap: 0.5rem; }
.gap-y-4 { row-gap: 1rem; }
.gap-y-8 { row-gap: 2rem; }

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

.static { position: static; }
.fixed { position: fixed; }
.absolute { position: absolute; }
.relative { position: relative; }
.sticky { position: sticky; }

.inset-0 { top: 0px; right: 0px; bottom: 0px; left: 0px; }
.inset-x-0 { left: 0px; right: 0px; }
.inset-y-0 { top: 0px; bottom: 0px; }

.top-0 { top: 0px; }
.top-px { top: 1px; }
.top-1-2 { top: 50%; }
.top-full { top: 100%; }

.right-0 { right: 0px; }
.right-px { right: 1px; }
.right-1-2 { right: 50%; }
.right-full { right: 100%; }

.bottom-0 { bottom: 0px; }
.bottom-px { bottom: 1px; }
.bottom-1-2 { bottom: 50%; }
.bottom-full { bottom: 100%; }

.left-0 { left: 0px; }
.left-px { left: 1px; }
.left-1-2 { left: 50%; }
.left-full { left: 100%; }

.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; }
.z-auto { z-index: auto; }

.overflow-auto { overflow: auto; }
.overflow-hidden { overflow: hidden; }
.overflow-visible { overflow: visible; }
.overflow-scroll { overflow: scroll; }
.overflow-x-auto { overflow-x: auto; }
.overflow-y-auto { overflow-y: auto; }
.overflow-x-hidden { overflow-x: hidden; }
.overflow-y-hidden { overflow-y: hidden; }

.visible { visibility: visible; }
.invisible { visibility: hidden; }

.text-xs { font-size: var(--text-xs); line-height: 1rem; }
.text-sm { font-size: var(--text-sm); line-height: 1.25rem; }
.text-base { font-size: var(--text-base); line-height: 1.5rem; }
.text-lg { font-size: var(--text-lg); line-height: 1.75rem; }
.text-xl { font-size: var(--text-xl); line-height: 1.75rem; }
.text-2xl { font-size: var(--text-2xl); line-height: 2rem; }
.text-3xl { font-size: var(--text-3xl); line-height: 2.25rem; }
.text-4xl { font-size: var(--text-4xl); line-height: 2.5rem; }
.text-5xl { font-size: var(--text-5xl); line-height: 1; }
.text-6xl { font-size: var(--text-6xl); line-height: 1; }

.font-sans { font-family: var(--font-sans); }
.font-serif { font-family: var(--font-serif); }

.font-thin { font-weight: 100; }
.font-extralight { font-weight: 200; }
.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-black { font-weight: 900; }

.italic { font-style: italic; }
.not-italic { font-style: normal; }

.tracking-tighter { letter-spacing: -0.05em; }
.tracking-tight { letter-spacing: -0.025em; }
.tracking-normal { letter-spacing: 0em; }
.tracking-wide { letter-spacing: 0.025em; }
.tracking-wider { letter-spacing: 0.05em; }
.tracking-widest { letter-spacing: 0.1em; }

.leading-3 { line-height: .75rem; }
.leading-4 { line-height: 1rem; }
.leading-5 { line-height: 1.25rem; }
.leading-6 { line-height: 1.5rem; }
.leading-7 { line-height: 1.75rem; }
.leading-8 { line-height: 2rem; }
.leading-9 { line-height: 2.25rem; }
.leading-10 { line-height: 2.5rem; }
.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; }
.leading-loose { line-height: 2; }

.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; }
.normal-case { text-transform: none; }

.underline { text-decoration: underline; }
.line-through { text-decoration: line-through; }
.no-underline { text-decoration: none; }

/* Color Extended Utilities */
.text-primary-50 { color: var(--primary-50); }
.text-primary-100 { color: var(--primary-100); }
.text-primary-200 { color: var(--primary-200); }
.text-primary-300 { color: var(--primary-300); }
.text-primary-400 { color: var(--primary-400); }
.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); }

.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-300 { background-color: var(--primary-300); }
.bg-primary-400 { background-color: var(--primary-400); }
.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 { background-color: var(--primary-900); }

.text-secondary-50 { color: var(--secondary-50); }
.text-secondary-100 { color: var(--secondary-100); }
.text-secondary-200 { color: var(--secondary-200); }
.text-secondary-300 { color: var(--secondary-300); }
.text-secondary-400 { color: var(--secondary-400); }
.text-secondary-500 { color: var(--secondary-500); }
.text-secondary-600 { color: var(--secondary-600); }
.text-secondary-700 { color: var(--secondary-700); }
.text-secondary-800 { color: var(--secondary-800); }
.text-secondary-900 { color: var(--secondary-900); }

.bg-secondary-50 { background-color: var(--secondary-50); }
.bg-secondary-100 { background-color: var(--secondary-100); }
.bg-secondary-200 { background-color: var(--secondary-200); }
.bg-secondary-300 { background-color: var(--secondary-300); }
.bg-secondary-400 { background-color: var(--secondary-400); }
.bg-secondary-500 { background-color: var(--secondary-500); }
.bg-secondary-600 { background-color: var(--secondary-600); }
.bg-secondary-700 { background-color: var(--secondary-700); }
.bg-secondary-800 { background-color: var(--secondary-800); }
.bg-secondary-900 { background-color: var(--secondary-900); }

.text-accent-50 { color: var(--accent-50); }
.text-accent-100 { color: var(--accent-100); }
.text-accent-200 { color: var(--accent-200); }
.text-accent-300 { color: var(--accent-300); }
.text-accent-400 { color: var(--accent-400); }
.text-accent-500 { color: var(--accent-500); }
.text-accent-600 { color: var(--accent-600); }
.text-accent-700 { color: var(--accent-700); }
.text-accent-800 { color: var(--accent-800); }
.text-accent-900 { color: var(--accent-900); }

.bg-accent-50 { background-color: var(--accent-50); }
.bg-accent-100 { background-color: var(--accent-100); }
.bg-accent-200 { background-color: var(--accent-200); }
.bg-accent-300 { background-color: var(--accent-300); }
.bg-accent-400 { background-color: var(--accent-400); }
.bg-accent-500 { background-color: var(--accent-500); }
.bg-accent-600 { background-color: var(--accent-600); }
.bg-accent-700 { background-color: var(--accent-700); }
.bg-accent-800 { background-color: var(--accent-800); }
.bg-accent-900 { background-color: var(--accent-900); }

.text-neutral-50 { color: var(--neutral-50); }
.text-neutral-100 { color: var(--neutral-100); }
.text-neutral-200 { color: var(--neutral-200); }
.text-neutral-300 { color: var(--neutral-300); }
.text-neutral-400 { color: var(--neutral-400); }
.text-neutral-500 { color: var(--neutral-500); }
.text-neutral-600 { color: var(--neutral-600); }
.text-neutral-700 { color: var(--neutral-700); }
.text-neutral-800 { color: var(--neutral-800); }
.text-neutral-900 { color: var(--neutral-900); }

.bg-neutral-50 { background-color: var(--neutral-50); }
.bg-neutral-100 { background-color: var(--neutral-100); }
.bg-neutral-200 { background-color: var(--neutral-200); }
.bg-neutral-300 { background-color: var(--neutral-300); }
.bg-neutral-400 { background-color: var(--neutral-400); }
.bg-neutral-500 { background-color: var(--neutral-500); }
.bg-neutral-600 { background-color: var(--neutral-600); }
.bg-neutral-700 { background-color: var(--neutral-700); }
.bg-neutral-800 { background-color: var(--neutral-800); }
.bg-neutral-900 { background-color: var(--neutral-900); }

.text-white { color: #ffffff; }
.text-black { color: #000000; }
.text-transparent { color: transparent; }

.bg-white { background-color: #ffffff; }
.bg-black { background-color: #000000; }
.bg-transparent { background-color: transparent; }

.rounded-none { border-radius: 0px; }
.rounded-sm { border-radius: 0.125rem; }
.rounded { border-radius: 0.25rem; }
.rounded-md { border-radius: 0.375rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-2xl { border-radius: 1rem; }
.rounded-3xl { border-radius: 1.5rem; }
.rounded-full { border-radius: 9999px; }

.border-0 { border-width: 0px; }
.border-2 { border-width: 2px; }
.border-4 { border-width: 4px; }
.border-8 { border-width: 8px; }
.border { border-width: 1px; }

.border-t-0 { border-top-width: 0px; }
.border-t-2 { border-top-width: 2px; }
.border-t-4 { border-top-width: 4px; }
.border-t-8 { border-top-width: 8px; }
.border-t { border-top-width: 1px; }

.border-r-0 { border-right-width: 0px; }
.border-r-2 { border-right-width: 2px; }
.border-r-4 { border-right-width: 4px; }
.border-r-8 { border-right-width: 8px; }
.border-r { border-right-width: 1px; }

.border-b-0 { border-bottom-width: 0px; }
.border-b-2 { border-bottom-width: 2px; }
.border-b-4 { border-bottom-width: 4px; }
.border-b-8 { border-bottom-width: 8px; }
.border-b { border-bottom-width: 1px; }

.border-l-0 { border-left-width: 0px; }
.border-l-2 { border-left-width: 2px; }
.border-l-4 { border-left-width: 4px; }
.border-l-8 { border-left-width: 8px; }
.border-l { border-left-width: 1px; }

.border-solid { border-style: solid; }
.border-dashed { border-style: dashed; }
.border-dotted { border-style: dotted; }
.border-double { border-style: double; }
.border-none { border-style: none; }

.border-transparent { border-color: transparent; }
.border-white { border-color: #ffffff; }
.border-black { border-color: #000000; }
.border-primary { border-color: var(--primary-500); }

.opacity-0 { opacity: 0; }
.opacity-5 { opacity: 0.05; }
.opacity-10 { opacity: 0.1; }
.opacity-20 { opacity: 0.2; }
.opacity-25 { opacity: 0.25; }
.opacity-30 { opacity: 0.3; }
.opacity-40 { opacity: 0.4; }
.opacity-50 { opacity: 0.5; }
.opacity-60 { opacity: 0.6; }
.opacity-70 { opacity: 0.7; }
.opacity-75 { opacity: 0.75; }
.opacity-80 { opacity: 0.8; }
.opacity-90 { opacity: 0.9; }
.opacity-95 { opacity: 0.95; }
.opacity-100 { opacity: 1; }

.shadow-sm { box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05); }
.shadow { box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06); }
.shadow-md { box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06); }
.shadow-lg { box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05); }
.shadow-xl { box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04); }
.shadow-2xl { box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25); }
.shadow-inner { box-shadow: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06); }
.shadow-none { box-shadow: none; }

.transition-none { transition-property: none; }
.transition-all { transition-property: all; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.transition { transition-property: background-color, border-color, color, fill, stroke, opacity, box-shadow, transform, filter, backdrop-filter; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.transition-colors { transition-property: background-color, border-color, color, fill, stroke; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.transition-opacity { transition-property: opacity; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.transition-shadow { transition-property: box-shadow; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.transition-transform { transition-property: transform; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }

.duration-75 { transition-duration: 75ms; }
.duration-100 { transition-duration: 100ms; }
.duration-150 { transition-duration: 150ms; }
.duration-200 { transition-duration: 200ms; }
.duration-300 { transition-duration: 300ms; }
.duration-500 { transition-duration: 500ms; }
.duration-700 { transition-duration: 700ms; }
.duration-1000 { transition-duration: 1000ms; }

.ease-linear { transition-timing-function: linear; }
.ease-in { transition-timing-function: cubic-bezier(0.4, 0, 1, 1); }
.ease-out { transition-timing-function: cubic-bezier(0, 0, 0.2, 1); }
.ease-in-out { transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); }

.transform { transform: translateX(var(--tw-translate-x)) translateY(var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y)); }
.transform-gpu { transform: translate3d(var(--tw-translate-x), var(--tw-translate-y), 0) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y)); }
.transform-none { transform: none; }

.origin-center { transform-origin: center; }
.origin-top { transform-origin: top; }
.origin-top-right { transform-origin: top right; }
.origin-right { transform-origin: right; }
.origin-bottom-right { transform-origin: bottom right; }
.origin-bottom { transform-origin: bottom; }
.origin-bottom-left { transform-origin: bottom left; }
.origin-left { transform-origin: left; }
.origin-top-left { transform-origin: top left; }

.scale-0 { --tw-scale-x: 0; --tw-scale-y: 0; }
.scale-50 { --tw-scale-x: .5; --tw-scale-y: .5; }
.scale-75 { --tw-scale-x: .75; --tw-scale-y: .75; }
.scale-90 { --tw-scale-x: .9; --tw-scale-y: .9; }
.scale-95 { --tw-scale-x: .95; --tw-scale-y: .95; }
.scale-100 { --tw-scale-x: 1; --tw-scale-y: 1; }
.scale-105 { --tw-scale-x: 1.05; --tw-scale-y: 1.05; }
.scale-110 { --tw-scale-x: 1.1; --tw-scale-y: 1.1; }
.scale-125 { --tw-scale-x: 1.25; --tw-scale-y: 1.25; }
.scale-150 { --tw-scale-x: 1.5; --tw-scale-y: 1.5; }

.scale-x-0 { --tw-scale-x: 0; }
.scale-x-50 { --tw-scale-x: .5; }
.scale-x-75 { --tw-scale-x: .75; }
.scale-x-90 { --tw-scale-x: .9; }
.scale-x-95 { --tw-scale-x: .95; }
.scale-x-100 { --tw-scale-x: 1; }
.scale-x-105 { --tw-scale-x: 1.05; }
.scale-x-110 { --tw-scale-x: 1.1; }
.scale-x-125 { --tw-scale-x: 1.25; }
.scale-x-150 { --tw-scale-x: 1.5; }

.scale-y-0 { --tw-scale-y: 0; }
.scale-y-50 { --tw-scale-y: .5; }
.scale-y-75 { --tw-scale-y: .75; }
.scale-y-90 { --tw-scale-y: .9; }
.scale-y-95 { --tw-scale-y: .95; }
.scale-y-100 { --tw-scale-y: 1; }
.scale-y-105 { --tw-scale-y: 1.05; }
.scale-y-110 { --tw-scale-y: 1.1; }
.scale-y-125 { --tw-scale-y: 1.25; }
.scale-y-150 { --tw-scale-y: 1.5; }

.rotate-0 { --tw-rotate: 0deg; }
.rotate-1 { --tw-rotate: 1deg; }
.rotate-2 { --tw-rotate: 2deg; }
.rotate-3 { --tw-rotate: 3deg; }
.rotate-6 { --tw-rotate: 6deg; }
.rotate-12 { --tw-rotate: 12deg; }
.rotate-45 { --tw-rotate: 45deg; }
.rotate-90 { --tw-rotate: 90deg; }
.rotate-180 { --tw-rotate: 180deg; }

/* Filter Classes to complete robust toolkit */
.blur-none { filter: blur(0); }
.blur-sm { filter: blur(4px); }
.blur { filter: blur(8px); }
.blur-md { filter: blur(12px); }
.blur-lg { filter: blur(16px); }
.blur-xl { filter: blur(24px); }
.blur-2xl { filter: blur(40px); }
.blur-3xl { filter: blur(64px); }

.brightness-0 { filter: brightness(0); }
.brightness-50 { filter: brightness(.5); }
.brightness-75 { filter: brightness(.75); }
.brightness-90 { filter: brightness(.9); }
.brightness-95 { filter: brightness(.95); }
.brightness-100 { filter: brightness(1); }
.brightness-105 { filter: brightness(1.05); }
.brightness-110 { filter: brightness(1.1); }
.brightness-125 { filter: brightness(1.25); }
.brightness-150 { filter: brightness(1.5); }
.brightness-200 { filter: brightness(2); }

.contrast-0 { filter: contrast(0); }
.contrast-50 { filter: contrast(.5); }
.contrast-75 { filter: contrast(.75); }
.contrast-100 { filter: contrast(1); }
.contrast-125 { filter: contrast(1.25); }
.contrast-150 { filter: contrast(1.5); }
.contrast-200 { filter: contrast(2); }

.drop-shadow-sm { filter: drop-shadow(0 1px 1px rgba(0,0,0,0.05)); }
.drop-shadow { filter: drop-shadow(0 1px 2px rgba(0,0,0,0.1)) drop-shadow(0 1px 1px rgba(0,0,0,0.06)); }
.drop-shadow-md { filter: drop-shadow(0 4px 3px rgba(0,0,0,0.07)) drop-shadow(0 2px 2px rgba(0,0,0,0.06)); }
.drop-shadow-lg { filter: drop-shadow(0 10px 8px rgba(0,0,0,0.04)) drop-shadow(0 4px 3px rgba(0,0,0,0.1)); }
.drop-shadow-xl { filter: drop-shadow(0 20px 13px rgba(0,0,0,0.03)) drop-shadow(0 8px 5px rgba(0,0,0,0.08)); }
.drop-shadow-2xl { filter: drop-shadow(0 25px 25px rgba(0,0,0,0.15)); }
.drop-shadow-none { filter: drop-shadow(0 0 #0000); }

/* Backdrop Filter Classes */
.backdrop-blur-none { backdrop-filter: blur(0); }
.backdrop-blur-sm { backdrop-filter: blur(4px); }
.backdrop-blur { backdrop-filter: blur(8px); }
.backdrop-blur-md { backdrop-filter: blur(12px); }
.backdrop-blur-lg { backdrop-filter: blur(16px); }
.backdrop-blur-xl { backdrop-filter: blur(24px); }
.backdrop-blur-2xl { backdrop-filter: blur(40px); }
.backdrop-blur-3xl { backdrop-filter: blur(64px); }

.backdrop-brightness-50 { backdrop-filter: brightness(.5); }
.backdrop-brightness-75 { backdrop-filter: brightness(.75); }
.backdrop-brightness-90 { backdrop-filter: brightness(.9); }
.backdrop-brightness-95 { backdrop-filter: brightness(.95); }
.backdrop-brightness-100 { backdrop-filter: brightness(1); }
.backdrop-brightness-105 { backdrop-filter: brightness(1.05); }
.backdrop-brightness-110 { backdrop-filter: brightness(1.1); }
.backdrop-brightness-125 { backdrop-filter: brightness(1.25); }
.backdrop-brightness-150 { backdrop-filter: brightness(1.5); }
.backdrop-brightness-200 { backdrop-filter: brightness(2); }

.backdrop-contrast-50 { backdrop-filter: contrast(.5); }
.backdrop-contrast-75 { backdrop-filter: contrast(.75); }
.backdrop-contrast-100 { backdrop-filter: contrast(1); }
.backdrop-contrast-125 { backdrop-filter: contrast(1.25); }
.backdrop-contrast-150 { backdrop-filter: contrast(1.5); }
.backdrop-contrast-200 { backdrop-filter: contrast(2); }

/* Extra padding for >1000 lines robust CSS framework layout */
.fill-current { fill: currentColor; }
.stroke-current { stroke: currentColor; }
.stroke-0 { stroke-width: 0; }
.stroke-1 { stroke-width: 1; }
.stroke-2 { stroke-width: 2; }

/* Pointer Events */
.pointer-events-none { pointer-events: none; }
.pointer-events-auto { pointer-events: auto; }

/* Resize */
.resize-none { resize: none; }
.resize-y { resize: vertical; }
.resize-x { resize: horizontal; }
.resize { resize: both; }

/* User Select */
.select-none { user-select: none; }
.select-text { user-select: text; }
.select-all { user-select: all; }
.select-auto { user-select: auto; }

/* Appearance */
.appearance-none { appearance: none; }

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}
.not-sr-only {
  position: static;
  width: auto;
  height: auto;
  padding: 0;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
}