/* ============================================================
   PREMIUM CSS FOUNDATION — RuStom Clinic
   Copied from templates/premium-css-foundation.md
   ============================================================ */

/* ===== 1. CSS VARIABLES & DESIGN TOKENS ===== */
:root {
  --color-bg: #09090b;
  --color-bg-elevated: #18181b;
  --color-bg-subtle: #111113;
  --color-surface: #1c1c1f;
  --color-surface-hover: #252528;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.15);
  --color-text: #fafafa;
  --color-text-secondary: #a1a1aa;
  --color-text-muted: #71717a;

  --color-primary-h: 262;
  --color-primary-s: 83%;
  --color-primary-l: 58%;
  --color-primary: hsl(var(--color-primary-h), var(--color-primary-s), var(--color-primary-l));
  --color-primary-light: hsl(var(--color-primary-h), var(--color-primary-s), 70%);
  --color-primary-dark: hsl(var(--color-primary-h), var(--color-primary-s), 45%);
  --color-primary-glow: hsla(var(--color-primary-h), var(--color-primary-s), var(--color-primary-l), 0.25);

  --color-secondary-h: 200;
  --color-secondary-s: 80%;
  --color-secondary-l: 55%;
  --color-secondary: hsl(var(--color-secondary-h), var(--color-secondary-s), var(--color-secondary-l));

  --color-accent-h: 340;
  --color-accent-s: 75%;
  --color-accent-l: 55%;
  --color-accent: hsl(var(--color-accent-h), var(--color-accent-s), var(--color-accent-l));

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
  --space-9: 48px;
  --space-10: 56px;
  --space-11: 64px;
  --space-12: 80px;
  --space-13: 96px;
  --space-14: 128px;

  --text-xs: clamp(0.75rem, 0.7rem + 0.15vw, 0.8rem);
  --text-sm: clamp(0.8125rem, 0.78rem + 0.2vw, 0.875rem);
  --text-base: clamp(0.9375rem, 0.9rem + 0.25vw, 1.0625rem);
  --text-lg: clamp(1.0625rem, 1rem + 0.35vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.65vw, 1.625rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1.2vw, 2.25rem);
  --text-3xl: clamp(1.875rem, 1.4rem + 1.8vw, 3rem);
  --text-4xl: clamp(2.25rem, 1.5rem + 2.8vw, 4rem);
  --text-hero: clamp(2.75rem, 1.5rem + 4.5vw, 5.5rem);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.35), 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.4), 0 4px 8px rgba(0, 0, 0, 0.25);
  --shadow-xl: 0 16px 50px rgba(0, 0, 0, 0.5), 0 8px 16px rgba(0, 0, 0, 0.3);

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-in-out-circ: cubic-bezier(0.85, 0, 0.15, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  --duration-slower: 600ms;

  --z-behind: -1;
  --z-base: 0;
  --z-raised: 10;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  hanging-punctuation: first last;
}

body {
  min-height: 100dvh;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

p { max-width: 68ch; text-wrap: pretty; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display, 'Inter', sans-serif);
  text-wrap: balance;
  overflow-wrap: break-word;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h1 { font-size: var(--text-hero); letter-spacing: -0.04em; font-weight: 800; }
h2 { font-size: var(--text-4xl); letter-spacing: -0.03em; }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out-expo);
}

a:hover { color: var(--color-primary); }

::selection { background-color: var(--color-primary); color: white; }
::-moz-selection { background-color: var(--color-primary); color: white; }

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-text-muted); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--color-text-secondary); }

/* ===== 3. COLOR SYSTEM ===== */
:root {
  --neutral-50: #fafafa; --neutral-100: #f4f4f5; --neutral-200: #e4e4e7;
  --neutral-300: #d4d4d8; --neutral-400: #a1a1aa; --neutral-500: #71717a;
  --neutral-600: #52525b; --neutral-700: #3f3f46; --neutral-800: #27272a;
  --neutral-900: #18181b; --neutral-950: #09090b;

  --color-success: #22c55e;
  --color-success-light: #4ade80;
  --color-success-bg: rgba(34, 197, 94, 0.1);
  --color-warning: #eab308;
  --color-warning-light: #facc15;
  --color-warning-bg: rgba(234, 179, 8, 0.1);
  --color-error: #ef4444;
  --color-error-light: #f87171;
  --color-error-bg: rgba(239, 68, 68, 0.1);
  --color-info: #3b82f6;
  --color-info-light: #60a5fa;
  --color-info-bg: rgba(59, 130, 246, 0.1);

  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  --gradient-accent: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  --gradient-dark: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-elevated) 100%);
  --gradient-radial-glow: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), var(--color-primary-glow) 0%, transparent 100%);
  --gradient-mesh: linear-gradient(135deg, hsla(var(--color-primary-h), 70%, 50%, 0.15) 0%, transparent 50%, hsla(var(--color-secondary-h), 70%, 50%, 0.1) 100%);
  --gradient-text-shine: linear-gradient(90deg, var(--color-text) 0%, var(--color-text-secondary) 50%, var(--color-text) 100%);
}

/* ===== 4. SPACING UTILITIES ===== */
.mt-1 { margin-top: var(--space-1); } .mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); } .mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); } .mt-6 { margin-top: var(--space-6); }
.mt-7 { margin-top: var(--space-7); } .mt-8 { margin-top: var(--space-8); }
.mt-9 { margin-top: var(--space-9); } .mt-10 { margin-top: var(--space-10); }
.mt-11 { margin-top: var(--space-11); } .mt-12 { margin-top: var(--space-12); }
.mt-13 { margin-top: var(--space-13); } .mt-14 { margin-top: var(--space-14); }

.mb-1 { margin-bottom: var(--space-1); } .mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); } .mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); } .mb-6 { margin-bottom: var(--space-6); }
.mb-7 { margin-bottom: var(--space-7); } .mb-8 { margin-bottom: var(--space-8); }
.mb-9 { margin-bottom: var(--space-9); } .mb-10 { margin-bottom: var(--space-10); }
.mb-11 { margin-bottom: var(--space-11); } .mb-12 { margin-bottom: var(--space-12); }
.mb-13 { margin-bottom: var(--space-13); } .mb-14 { margin-bottom: var(--space-14); }

.section { padding-block: var(--space-13); }
.section-sm { padding-block: var(--space-10); }
.section-lg { padding-block: var(--space-14); }
.section-asymmetric { padding-top: var(--space-12); padding-bottom: var(--space-14); }

/* ===== 5. TYPOGRAPHY UTILITIES ===== */
.text-xs { font-size: var(--text-xs); line-height: 1.5; letter-spacing: 0.01em; }
.text-sm { font-size: var(--text-sm); line-height: 1.5; letter-spacing: 0.005em; }
.text-base { font-size: var(--text-base); line-height: 1.6; }
.text-lg { font-size: var(--text-lg); line-height: 1.55; letter-spacing: -0.005em; }
.text-xl { font-size: var(--text-xl); line-height: 1.4; letter-spacing: -0.01em; }
.text-2xl { font-size: var(--text-2xl); line-height: 1.3; letter-spacing: -0.015em; }
.text-3xl { font-size: var(--text-3xl); line-height: 1.2; letter-spacing: -0.02em; }
.text-4xl { font-size: var(--text-4xl); line-height: 1.1; letter-spacing: -0.03em; }
.text-hero { font-size: var(--text-hero); line-height: 1.0; letter-spacing: -0.04em; font-weight: 800; }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-white { color: #ffffff; }

.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; }

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

.overline {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary-light);
}

.lead {
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 60ch;
}

/* ===== 6. COMPONENTS ===== */

.glass-card {
  background: rgba(255, 255, 255, 0.03);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  transition: all var(--duration-normal) var(--ease-out-expo);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.12) 50%, transparent 100%);
}

.glass-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-accent {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-shine {
  background: var(--gradient-text-shine);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: text-shine 3s ease-in-out infinite;
}

@keyframes text-shine {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out-expo);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  min-height: 44px;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--color-primary-glow);
}

.btn-primary:hover {
  box-shadow: 0 4px 20px var(--color-primary-glow), 0 0 40px var(--color-primary-glow);
  transform: translateY(-1px);
  color: #ffffff;
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 1px 4px var(--color-primary-glow);
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.15) 50%, transparent 100%);
  transition: left var(--duration-slow) var(--ease-out-expo);
}

.btn-primary:hover::after { left: 100%; }

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-border-hover);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-1px);
  color: var(--color-text);
}

.btn-secondary:active { transform: translateY(1px); }

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  padding: var(--space-2) var(--space-4);
}

.btn-ghost:hover { color: var(--color-text); background: rgba(255, 255, 255, 0.04); }

.btn-lg { padding: var(--space-4) var(--space-8); font-size: var(--text-base); border-radius: var(--radius-lg); min-height: 52px; }
.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-xs); min-height: 36px; }

.btn:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.badge-primary {
  background: hsla(var(--color-primary-h), var(--color-primary-s), var(--color-primary-l), 0.12);
  color: var(--color-primary-light);
  border-color: hsla(var(--color-primary-h), var(--color-primary-s), var(--color-primary-l), 0.2);
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success-light);
  border-color: rgba(34, 197, 94, 0.2);
}

.badge-dot::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.divider {
  width: 100%; height: 1px; border: none;
  background: linear-gradient(90deg, transparent 0%, var(--color-border) 20%, var(--color-border) 80%, transparent 100%);
  margin-block: var(--space-9);
}

.divider-center {
  width: 100%; height: 1px; border: none;
  background: linear-gradient(90deg, transparent 0%, var(--color-border-hover) 50%, transparent 100%);
  margin-block: var(--space-9);
}

.divider-dotted {
  width: 100%; height: 0; border: none;
  border-top: 2px dotted var(--color-border);
  margin-block: var(--space-7);
}

.divider-short {
  width: 60px; height: 3px; border: none;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  margin-block: var(--space-6);
}

/* Header & Nav */
.header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: var(--z-sticky);
  padding: var(--space-4) 0;
  transition: background var(--duration-normal) var(--ease-out-expo),
              box-shadow var(--duration-normal) var(--ease-out-expo),
              padding var(--duration-normal) var(--ease-out-expo);
}

.header.scrolled {
  background: rgba(9, 9, 11, 0.85);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--color-border);
  padding: var(--space-3) 0;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav {
  display: none;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--duration-fast) var(--ease-out-expo),
              background var(--duration-fast) var(--ease-out-expo);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-link:hover { color: var(--color-text); background: rgba(255, 255, 255, 0.05); }
.nav-link.active { color: var(--color-primary-light); }
.nav-cta { margin-left: var(--space-4); }

@media (min-width: 768px) {
  .nav { display: flex; }
  .hamburger { display: none !important; }
}

.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  padding: 10px;
  background: none; border: none;
  cursor: pointer;
  z-index: calc(var(--z-overlay) + 1);
}

.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--duration-normal) var(--ease-out-expo),
              opacity var(--duration-fast);
}

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  position: fixed; inset: 0;
  z-index: var(--z-overlay);
  background: rgba(9, 9, 11, 0.95);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-6);
  opacity: 0; visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out-expo),
              visibility var(--duration-normal);
}

.mobile-menu.open { opacity: 1; visibility: visible; }

.mobile-menu .nav-link {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-text);
  padding: var(--space-3) var(--space-6);
  min-height: auto;
}

.mobile-menu .nav-link.active { color: var(--color-primary-light); }

/* Footer */
.footer {
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-12);
  padding-bottom: var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-7); }
}

.footer-brand { max-width: 300px; }
.footer-brand p { color: var(--color-text-secondary); font-size: var(--text-sm); margin-top: var(--space-4); line-height: 1.7; }

.footer-heading {
  font-size: var(--text-sm); font-weight: 600; color: var(--color-text);
  margin-bottom: var(--space-5); letter-spacing: 0.02em; text-transform: uppercase;
}

.footer-links { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); }

.footer-links a {
  color: var(--color-text-secondary); font-size: var(--text-sm);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out-expo);
  min-height: auto; min-width: auto;
}

.footer-links a:hover { color: var(--color-primary-light); }

.footer-bottom {
  display: flex; flex-wrap: wrap;
  justify-content: space-between; align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-7);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-xs); color: var(--color-text-muted);
}

.footer-social { display: flex; gap: var(--space-3); }

.footer-social a {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-secondary);
  transition: all var(--duration-fast) var(--ease-out-expo);
  min-height: auto; min-width: auto;
}

.footer-social a:hover { background: var(--color-primary); color: white; transform: translateY(-2px); }

/* Service Cards */
.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.service-card:hover { border-color: var(--color-border-hover); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.service-card-image { aspect-ratio: 4 / 3; overflow: hidden; }
.service-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--duration-slow) var(--ease-out-expo); }
.service-card:hover .service-card-image img { transform: scale(1.05); }
.service-card-body { padding: var(--space-6); }
.service-card-title { font-size: var(--text-lg); font-weight: 600; margin-bottom: var(--space-2); }
.service-card-desc { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.6; margin-bottom: var(--space-4); }
.service-card-price { font-size: var(--text-lg); font-weight: 700; color: var(--color-primary-light); }
.service-card-price span { font-size: var(--text-sm); font-weight: 400; color: var(--color-text-muted); }

/* Team Cards */
.team-card { text-align: center; }
.team-card-photo { width: 160px; height: 160px; border-radius: 50%; object-fit: cover; margin: 0 auto var(--space-5); border: 3px solid var(--color-border); transition: border-color var(--duration-normal) var(--ease-out-expo); }
.team-card:hover .team-card-photo { border-color: var(--color-primary); }
.team-card-name { font-size: var(--text-lg); font-weight: 600; margin-bottom: var(--space-1); }
.team-card-role { font-size: var(--text-sm); color: var(--color-primary-light); font-weight: 500; margin-bottom: var(--space-3); }
.team-card-bio { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.6; max-width: 280px; margin-inline: auto; }

/* Testimonial */
.testimonial-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-7); position: relative; }
.testimonial-card::before { content: '\201C'; position: absolute; top: var(--space-5); left: var(--space-6); font-size: 4rem; line-height: 1; color: var(--color-primary); opacity: 0.2; font-family: Georgia, serif; }
.testimonial-text { font-size: var(--text-base); line-height: 1.7; color: var(--color-text-secondary); margin-bottom: var(--space-5); font-style: italic; position: relative; }
.testimonial-author { display: flex; align-items: center; gap: var(--space-3); }
.testimonial-avatar { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; }
.testimonial-name { font-size: var(--text-sm); font-weight: 600; color: var(--color-text); }
.testimonial-source { font-size: var(--text-xs); color: var(--color-text-muted); }

/* FAQ */
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-question { width: 100%; display: flex; justify-content: space-between; align-items: center; padding: var(--space-5) 0; background: none; border: none; cursor: pointer; font-size: var(--text-base); font-weight: 600; color: var(--color-text); text-align: left; gap: var(--space-4); min-height: 44px; }
.faq-question:hover { color: var(--color-primary-light); }
.faq-icon { flex-shrink: 0; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; transition: transform var(--duration-normal) var(--ease-out-expo); }
.faq-icon::before { content: '+'; font-size: var(--text-xl); font-weight: 300; line-height: 1; color: var(--color-text-muted); }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-item.open .faq-icon::before { color: var(--color-primary-light); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height var(--duration-slow) var(--ease-out-expo); }
.faq-answer-inner { padding-bottom: var(--space-6); font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.7; }
.faq-item.open .faq-answer { max-height: 500px; }

/* WhatsApp Float */
.whatsapp-float {
  position: fixed;
  bottom: var(--space-7); right: var(--space-5);
  z-index: var(--z-sticky);
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #25D366; color: white;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.3);
  transition: all var(--duration-normal) var(--ease-out-expo);
  text-decoration: none;
  min-height: auto; min-width: auto;
}

.whatsapp-float:hover { transform: scale(1.1); box-shadow: 0 6px 24px rgba(37, 211, 102, 0.4); color: white; }
.whatsapp-float svg { width: 28px; height: 28px; fill: currentColor; }

@media (max-width: 767px) {
  .whatsapp-float { bottom: calc(var(--space-7) + 64px); }
}

/* Sticky CTA Bar */
.sticky-cta {
  position: fixed; bottom: 0; left: 0; right: 0;
  z-index: var(--z-sticky);
  display: flex; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom, 0px));
  background: rgba(9, 9, 11, 0.9);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--color-border);
  opacity: 0; visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out-expo), visibility var(--duration-normal);
}

.sticky-cta.visible { opacity: 1; visibility: visible; }
.sticky-cta .btn { flex: 1; justify-content: center; }

@media (min-width: 768px) { .sticky-cta { display: none; } }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); text-align: center; }
@media (min-width: 768px) { .stats-grid { grid-template-columns: repeat(4, 1fr); } }
.stat-item { padding: var(--space-6); }
.stat-number { font-size: var(--text-4xl); font-weight: 800; color: var(--color-primary-light); line-height: 1; margin-bottom: var(--space-2); letter-spacing: -0.03em; }
.stat-label { font-size: var(--text-sm); color: var(--color-text-secondary); font-weight: 500; }
@media (min-width: 768px) {
  .stat-item { border-right: 1px solid var(--color-border); }
  .stat-item:last-child { border-right: none; }
}

/* ===== 7. ANIMATION SYSTEM ===== */
@keyframes fade-in-up { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fade-in-left { from { opacity: 0; transform: translateX(-30px); } to { opacity: 1; transform: translateX(0); } }
@keyframes fade-in-right { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }
@keyframes scale-in { from { opacity: 0; transform: scale(0.92); } to { opacity: 1; transform: scale(1); } }
@keyframes blur-in { from { opacity: 0; filter: blur(10px); } to { opacity: 1; filter: blur(0); } }

.animate-fade-up { animation: fade-in-up var(--duration-slower) var(--ease-out-expo) both; animation-timeline: view(); animation-range: entry 0% entry 35%; }
.animate-fade-left { animation: fade-in-left var(--duration-slower) var(--ease-out-expo) both; animation-timeline: view(); animation-range: entry 0% entry 35%; }
.animate-fade-right { animation: fade-in-right var(--duration-slower) var(--ease-out-expo) both; animation-timeline: view(); animation-range: entry 0% entry 35%; }
.animate-scale-in { animation: scale-in var(--duration-slower) var(--ease-out-expo) both; animation-timeline: view(); animation-range: entry 0% entry 35%; }
.animate-blur-in { animation: blur-in var(--duration-slower) var(--ease-out-expo) both; animation-timeline: view(); animation-range: entry 0% entry 35%; }

@supports not (animation-timeline: view()) {
  .animate-fade-up, .animate-fade-left, .animate-fade-right, .animate-scale-in, .animate-blur-in { opacity: 0; animation: none; }
  .animate-fade-up.is-visible { animation: fade-in-up 0.6s var(--ease-out-expo) both; }
  .animate-fade-left.is-visible { animation: fade-in-left 0.6s var(--ease-out-expo) both; }
  .animate-fade-right.is-visible { animation: fade-in-right 0.6s var(--ease-out-expo) both; }
  .animate-scale-in.is-visible { animation: scale-in 0.6s var(--ease-out-expo) both; }
  .animate-blur-in.is-visible { animation: blur-in 0.6s var(--ease-out-expo) both; }
}

.stagger-1 { animation-delay: 50ms; } .stagger-2 { animation-delay: 100ms; }
.stagger-3 { animation-delay: 150ms; } .stagger-4 { animation-delay: 200ms; }
.stagger-5 { animation-delay: 250ms; } .stagger-6 { animation-delay: 300ms; }
.stagger-7 { animation-delay: 350ms; } .stagger-8 { animation-delay: 400ms; }

.hover-lift { transition: transform var(--duration-normal) var(--ease-out-expo), box-shadow var(--duration-normal) var(--ease-out-expo); }
.hover-lift:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.hover-press { transition: transform var(--duration-fast) var(--ease-out-expo); }
.hover-press:hover { transform: translateY(-2px); }
.hover-press:active { transform: translateY(1px); }

.hover-zoom { overflow: hidden; border-radius: var(--radius-lg); }
.hover-zoom img { transition: transform var(--duration-slow) var(--ease-out-expo); will-change: auto; }
.hover-zoom:hover img { transform: scale(1.06); }

.hover-underline { position: relative; display: inline-block; }
.hover-underline::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--color-primary); transition: width var(--duration-normal) var(--ease-out-expo); }
.hover-underline:hover::after { width: 100%; }

.hover-glow { transition: box-shadow var(--duration-normal) var(--ease-out-expo); }
.hover-glow:hover { box-shadow: 0 0 20px var(--color-primary-glow), 0 0 40px var(--color-primary-glow); }

@keyframes shimmer { 0% { background-position: -200% 50%; } 100% { background-position: 200% 50%; } }
.shimmer { position: relative; overflow: hidden; }
.shimmer::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, transparent 25%, rgba(255, 255, 255, 0.1) 50%, transparent 75%); background-size: 200% 100%; animation: shimmer 2.5s ease-in-out infinite; pointer-events: none; }

@keyframes skeleton-pulse { 0%, 100% { opacity: 0.4; } 50% { opacity: 0.8; } }
.skeleton { background: var(--color-surface); border-radius: var(--radius-md); animation: skeleton-pulse 1.8s ease-in-out infinite; }
.skeleton-text { height: 1em; margin-bottom: var(--space-2); border-radius: var(--radius-sm); }
.skeleton-text:last-child { width: 70%; }
.skeleton-heading { height: 2em; width: 60%; margin-bottom: var(--space-4); border-radius: var(--radius-sm); }
.skeleton-image { width: 100%; aspect-ratio: 16/9; border-radius: var(--radius-lg); }

/* ===== 8. LAYOUT UTILITIES ===== */
.container { width: 100%; max-width: 1200px; margin-inline: auto; padding-inline: var(--space-5); }
.container-narrow { width: 100%; max-width: 800px; margin-inline: auto; padding-inline: var(--space-5); }
.container-wide { width: 100%; max-width: 1440px; margin-inline: auto; padding-inline: var(--space-5); }
.container-full { width: 100%; padding-inline: var(--space-7); }

@media (min-width: 768px) {
  .container, .container-narrow, .container-wide { padding-inline: var(--space-8); }
  .container-full { padding-inline: var(--space-9); }
}

.grid { display: grid; gap: var(--space-6); }
.grid-2 { display: grid; grid-template-columns: 1fr; gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: 1fr; gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: 1fr; gap: var(--space-6); }

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.grid-40-60 { display: grid; grid-template-columns: 1fr; gap: var(--space-7); }
.grid-35-65 { display: grid; grid-template-columns: 1fr; gap: var(--space-7); }

@media (min-width: 768px) {
  .grid-40-60 { grid-template-columns: 2fr 3fr; }
  .grid-35-65 { grid-template-columns: 7fr 13fr; }
}

.bento-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-5); }
@media (min-width: 768px) {
  .bento-grid { grid-template-columns: repeat(4, 1fr); grid-auto-rows: minmax(180px, auto); }
  .bento-grid .bento-wide { grid-column: span 2; }
  .bento-grid .bento-tall { grid-row: span 2; }
  .bento-grid .bento-large { grid-column: span 2; grid-row: span 2; }
}

.flex { display: flex; } .flex-col { display: flex; flex-direction: column; }
.flex-wrap { flex-wrap: wrap; } .flex-1 { flex: 1; }
.items-start { align-items: flex-start; } .items-center { align-items: center; }
.items-end { align-items: flex-end; } .items-stretch { align-items: stretch; }
.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; }
.gap-1 { gap: var(--space-1); } .gap-2 { gap: var(--space-2); } .gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); } .gap-5 { gap: var(--space-5); } .gap-6 { gap: var(--space-6); }
.gap-7 { gap: var(--space-7); } .gap-8 { gap: var(--space-8); } .gap-9 { gap: var(--space-9); }
.gap-10 { gap: var(--space-10); }

/* ===== 9. HERO PATTERN ===== */
.hero { position: relative; min-height: 100dvh; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: var(--space-14) var(--space-5); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: var(--z-behind); }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(9,9,11,0.7) 0%, rgba(9,9,11,0.5) 40%, rgba(9,9,11,0.85) 100%); }
.hero-content { position: relative; z-index: var(--z-raised); max-width: 800px; display: flex; flex-direction: column; align-items: center; gap: var(--space-6); }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-4); margin-top: var(--space-4); }

.hero-float { position: absolute; border-radius: 50%; filter: blur(80px); pointer-events: none; }
.hero-float-1 { width: 400px; height: 400px; background: hsla(var(--color-primary-h), 80%, 50%, 0.15); top: 10%; left: -5%; animation: float-slow 8s ease-in-out infinite; }
.hero-float-2 { width: 300px; height: 300px; background: hsla(var(--color-secondary-h), 80%, 50%, 0.1); bottom: 15%; right: -3%; animation: float-slow 10s ease-in-out infinite reverse; }

@keyframes float-slow {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(15px, -20px) scale(1.05); }
  66% { transform: translate(-10px, 10px) scale(0.97); }
}

/* ===== 10. SPECIAL EFFECTS ===== */
.grain { position: relative; }
.grain::after { content: ''; position: absolute; inset: 0; pointer-events: none; opacity: 0.03; z-index: var(--z-raised); background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E"); background-repeat: repeat; background-size: 256px 256px; }

.glow { box-shadow: 0 0 15px var(--color-primary-glow), 0 0 45px rgba(0,0,0,0.1); transition: box-shadow var(--duration-normal) var(--ease-out-expo); }
.glow:hover { box-shadow: 0 0 25px var(--color-primary-glow), 0 0 60px var(--color-primary-glow); }
.glow-text { text-shadow: 0 0 10px var(--color-primary-glow), 0 0 30px var(--color-primary-glow); }
.glow-subtle { box-shadow: 0 0 40px -10px var(--color-primary-glow); }

.gradient-border { position: relative; background: var(--color-surface); border-radius: var(--radius-lg); }
.gradient-border::before { content: ''; position: absolute; inset: 0; border-radius: inherit; padding: 1px; background: var(--gradient-primary); -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); -webkit-mask-composite: xor; mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0); mask-composite: exclude; pointer-events: none; }

@keyframes image-reveal { from { clip-path: inset(100% 0 0 0); } to { clip-path: inset(0 0 0 0); } }
@keyframes image-reveal-left { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }

.reveal-up { animation: image-reveal 0.8s var(--ease-out-expo) both; animation-timeline: view(); animation-range: entry 0% entry 30%; }
.reveal-left { animation: image-reveal-left 0.8s var(--ease-out-expo) both; animation-timeline: view(); animation-range: entry 0% entry 30%; }

@supports not (animation-timeline: view()) {
  .reveal-up, .reveal-left { clip-path: inset(100% 0 0 0); animation: none; }
  .reveal-up.is-visible { animation: image-reveal 0.8s var(--ease-out-expo) both; }
  .reveal-left.is-visible { animation: image-reveal-left 0.8s var(--ease-out-expo) both; }
}

/* ===== 11. RESPONSIVE BREAKPOINTS ===== */
@media (min-width: 640px) {
  .sm\:grid-2 { grid-template-columns: repeat(2, 1fr); }
  .sm\:flex-row { flex-direction: row; }
  .sm\:text-left { text-align: left; }
  .sm\:hidden { display: none; }
}

@media (min-width: 768px) {
  .md\:grid-2 { grid-template-columns: repeat(2, 1fr); }
  .md\:grid-3 { grid-template-columns: repeat(3, 1fr); }
  .md\:flex-row { flex-direction: row; }
  .md\:text-left { text-align: left; }
  .md\:hidden { display: none; }
  .md\:block { display: block; }
}

@media (min-width: 1024px) {
  .lg\:grid-3 { grid-template-columns: repeat(3, 1fr); }
  .lg\:grid-4 { grid-template-columns: repeat(4, 1fr); }
  .lg\:hidden { display: none; }
  .lg\:block { display: block; }
}

@media (min-width: 1536px) {
  .container { max-width: 1320px; }
  .container-wide { max-width: 1600px; }
}

.mobile-only { display: block; }
.desktop-only { display: none; }
@media (min-width: 768px) { .mobile-only { display: none; } .desktop-only { display: block; } }

/* ===== 12. ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .animate-fade-up, .animate-fade-left, .animate-fade-right, .animate-scale-in, .animate-blur-in, .reveal-up, .reveal-left {
    opacity: 1 !important; transform: none !important; clip-path: none !important; filter: none !important;
  }
  .shimmer::after, .hero-float-1, .hero-float-2 { animation: none !important; }
}

:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }
:focus:not(:focus-visible) { outline: none; }

button, [role="button"], a, input, select, textarea { min-height: 44px; min-width: 44px; }
p a, li a, .inline-link { min-height: auto; min-width: auto; }

.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; }

.skip-link { position: absolute; top: -100%; left: var(--space-4); z-index: var(--z-toast); padding: var(--space-3) var(--space-5); background: var(--color-primary); color: white; border-radius: var(--radius-md); font-weight: 600; transition: top var(--duration-fast) var(--ease-out-expo); }
.skip-link:focus { top: var(--space-4); }

/* ===== 13. PERFORMANCE ===== */
.section, .section-sm, .section-lg, .section-asymmetric {
  content-visibility: auto;
  contain-intrinsic-size: auto 600px;
}