/* ============================================
   PURETEC Design System — globals.css
   "The Art of Refined Technology"
   Black + Gold Premium Theme
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Playfair+Display:wght@400;500;600;700;800;900&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* ---- CSS Custom Properties ---- */
:root {
  /* Colors */
  --bg-primary: #050505;
  --bg-secondary: #0b0b0a;
  --bg-tertiary: #15120d;
  --bg-card: #0f0f0d;
  --bg-card-hover: #18150f;
  --bg-overlay: rgba(0, 0, 0, 0.85);

  /* Gold Palette */
  --gold-50: #FFF9E6;
  --gold-100: #FFF0BF;
  --gold-200: #FFE699;
  --gold-300: #FFD966;
  --gold-400: #FFCC33;
  --gold-500: #D4A843;
  --gold-600: #B8922E;
  --gold-700: #9A7A24;
  --gold-800: #7C621A;
  --gold-900: #5E4A10;

  --accent-gold: #D4A843;
  --accent-gold-light: #E8C547;
  --accent-gold-dark: #B8922E;
  --accent-gold-glow: rgba(212, 168, 67, 0.3);
  --accent-gold-subtle: rgba(212, 168, 67, 0.08);

  /* Text */
  --text-primary: #FFFFFF;
  --text-secondary: #B8B3A8;
  --text-tertiary: #80796B;
  --text-gold: #D4A843;

  /* Borders */
  --border-primary: rgba(255, 255, 255, 0.06);
  --border-gold: rgba(212, 168, 67, 0.3);
  --border-gold-strong: rgba(212, 168, 67, 0.6);

  /* Gradients */
  --gradient-gold: linear-gradient(135deg, #D4A843 0%, #E8C547 50%, #B8922E 100%);
  --gradient-gold-text: linear-gradient(90deg, #D4A843, #E8C547, #D4A843);
  --gradient-gold-shimmer: linear-gradient(90deg, transparent, rgba(212, 168, 67, 0.4), transparent);
  --gradient-dark: linear-gradient(180deg, #050505 0%, #11100d 100%);
  --gradient-card: linear-gradient(145deg, rgba(25, 23, 18, 0.82), rgba(9, 9, 8, 0.96));
  --gradient-hero: radial-gradient(ellipse at 50% 0%, rgba(212, 168, 67, 0.12) 0%, transparent 58%);

  /* Shadows */
  --shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.28);
  --shadow-md: 0 16px 38px rgba(0, 0, 0, 0.34);
  --shadow-lg: 0 24px 58px rgba(0, 0, 0, 0.45);
  --shadow-xl: 0 34px 78px rgba(0, 0, 0, 0.55);
  --shadow-gold: 0 4px 24px rgba(212, 168, 67, 0.15);
  --shadow-gold-strong: 0 8px 40px rgba(212, 168, 67, 0.25);

  /* Typography */
  --font-sans: 'Inter', 'Outfit', system-ui, -apple-system, sans-serif;
  --font-display: 'Playfair Display', 'Georgia', serif;
  --font-mono: 'SF Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 960px;
  --navbar-height: 80px;
  --sidebar-width: 260px;
}

/* ---- Light Theme ---- */
[data-theme="light"] {
  /* Backgrounds */
  --bg-primary: #F8F6F1;
  --bg-secondary: #EFECE5;
  --bg-tertiary: #E8E4DC;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F5F3EE;
  --bg-overlay: rgba(255, 255, 255, 0.9);

  /* Gold Palette — slightly deeper for legibility on light */
  --accent-gold: #B8922E;
  --accent-gold-light: #D4A843;
  --accent-gold-dark: #9A7A24;
  --accent-gold-glow: rgba(184, 146, 46, 0.25);
  --accent-gold-subtle: rgba(184, 146, 46, 0.08);

  /* Text */
  --text-primary: #1A1A1A;
  --text-secondary: #555555;
  --text-tertiary: #888888;
  --text-gold: #9A7A24;

  /* Borders */
  --border-primary: rgba(0, 0, 0, 0.08);
  --border-gold: rgba(184, 146, 46, 0.35);
  --border-gold-strong: rgba(184, 146, 46, 0.6);

  /* Gradients */
  --gradient-gold: linear-gradient(135deg, #B8922E 0%, #D4A843 50%, #9A7A24 100%);
  --gradient-gold-text: linear-gradient(90deg, #9A7A24, #B8922E, #9A7A24);
  --gradient-gold-shimmer: linear-gradient(90deg, transparent, rgba(184, 146, 46, 0.3), transparent);
  --gradient-dark: linear-gradient(180deg, #F8F6F1 0%, #EFECE5 100%);
  --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(248, 246, 241, 0.9));
  --gradient-hero: radial-gradient(ellipse at 50% 0%, rgba(184, 146, 46, 0.06) 0%, transparent 60%);

  /* Shadows — softer for light mode */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
  --shadow-gold: 0 4px 24px rgba(184, 146, 46, 0.12);
  --shadow-gold-strong: 0 8px 40px rgba(184, 146, 46, 0.2);
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: var(--navbar-height);
  transition: background-color 0.3s ease, color 0.3s ease;
}

body {
  font-family: var(--font-sans);
  background:
    linear-gradient(180deg, rgba(212, 168, 67, 0.035), transparent 360px),
    var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ---- Custom Scrollbar ---- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--gold-700);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-gold);
}

/* ---- Selection ---- */
::selection {
  background: rgba(212, 168, 67, 0.3);
  color: var(--text-primary);
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p {
  color: var(--text-secondary);
  line-height: 1.8;
}

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-gold-light);
}

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

/* ---- Utility Classes ---- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section {
  padding: var(--space-5xl) 0;
  position: relative;
}

.gold-text {
  background: var(--gradient-gold-text);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.glass {
  background: rgba(10, 10, 10, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-primary);
}

.glass-gold {
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-gold);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 2rem;
  border-radius: 10px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  letter-spacing: 0.02em;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gradient-gold-shimmer);
  transition: left var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn-gold {
  background: var(--gradient-gold);
  color: #000;
  box-shadow: var(--shadow-gold);
}

.btn-gold:hover {
  color: #000;
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold-strong);
}

.btn-gold:active {
  transform: translateY(0);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.02);
  color: var(--accent-gold);
  border: 1px solid var(--border-gold);
}

.btn-outline:hover {
  background: var(--accent-gold-subtle);
  border-color: var(--accent-gold-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  padding: 0.5rem 1rem;
}

.btn-ghost:hover {
  color: var(--accent-gold);
  background: var(--accent-gold-subtle);
}

/* ---- Form Elements ---- */
.input-field {
  width: 100%;
  padding: 0.875rem 1.25rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: all var(--transition-base);
  outline: none;
}

.input-field::placeholder {
  color: var(--text-tertiary);
}

.input-field:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px var(--accent-gold-glow);
}

.input-field:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

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

.input-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ---- Cards ---- */
.card {
  background: var(--gradient-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, transparent 40%, var(--border-gold) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-gold);
  border-color: var(--border-gold);
}

.card:hover::before {
  opacity: 1;
}

/* ---- Dividers ---- */
.divider {
  width: 60px;
  height: 3px;
  background: var(--gradient-gold);
  border-radius: var(--radius-full);
  margin: var(--space-lg) 0;
}

.divider-center {
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   KEYFRAME ANIMATIONS
   ============================================ */

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes shimmerText {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(212, 168, 67, 0.15);
  }
  50% {
    box-shadow: 0 0 40px rgba(212, 168, 67, 0.3);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.4);
  }
  50% {
    box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
  }
}

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3) translateY(40px);
  }
  50% {
    transform: scale(1.05) translateY(-5px);
  }
  70% {
    transform: scale(0.95) translateY(2px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes rotateGradient {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes typewriter {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes blink {
  0%, 100% { border-color: var(--accent-gold); }
  50% { border-color: transparent; }
}

@keyframes particleFloat {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(-100vh) rotate(720deg);
    opacity: 0;
  }
}

@keyframes lineExpand {
  from { width: 0; }
  to { width: 60px; }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scrollDown {
  0% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(10px); opacity: 0.5; }
  100% { transform: translateY(0); opacity: 1; }
}

@keyframes borderGlow {
  0%, 100% {
    border-color: rgba(212, 168, 67, 0.2);
  }
  50% {
    border-color: rgba(212, 168, 67, 0.6);
  }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ---- Animation Utility Classes ---- */
.animate-fade-in { animation: fadeIn 0.6s ease-out forwards; }
.animate-fade-in-up { animation: fadeInUp 0.6s ease-out forwards; }
.animate-fade-in-down { animation: fadeInDown 0.6s ease-out forwards; }
.animate-fade-in-left { animation: fadeInLeft 0.6s ease-out forwards; }
.animate-fade-in-right { animation: fadeInRight 0.6s ease-out forwards; }
.animate-scale-in { animation: scaleIn 0.6s ease-out forwards; }
.animate-bounce-in { animation: bounceIn 0.8s ease-out forwards; }
.animate-float { animation: float 3s ease-in-out infinite; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-glow { animation: glow 2s ease-in-out infinite; }
.animate-shimmer { animation: shimmerText 3s ease-in-out infinite; }
.animate-spin { animation: spin 1s linear infinite; }

/* ---- Delay Utilities ---- */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }
.delay-600 { animation-delay: 600ms; }
.delay-700 { animation-delay: 700ms; }
.delay-800 { animation-delay: 800ms; }

/* ---- Light Theme Overrides ---- */
[data-theme="light"] ::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

[data-theme="light"] .glass {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .glass-gold {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--border-gold);
}

[data-theme="light"] ::selection {
  background: rgba(184, 146, 46, 0.25);
  color: var(--text-primary);
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
  :root {
    --navbar-height: 70px;
    --space-5xl: 5rem;
  }

  .container {
    padding: 0 var(--space-lg);
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --navbar-height: 64px;
    --space-5xl: 4rem;
    --space-4xl: 3rem;
  }

  .container {
    padding: 0 var(--space-md);
  }

  .section {
    padding: var(--space-4xl) 0;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .container {
    padding: 0 0.75rem;
  }
}