/* ============================================
   Bijouterie Mille & Line - Base Styles
   ============================================ */

/* CSS Variables */
:root {
  /* Base Colors */
  --bg-primary: #0f0f0f;
  --bg-secondary: #161616;
  --bg-tertiary: #1a1a1a;
  --bg-glass: rgba(30, 30, 30, 0.6);
  --bg-glass-light: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(212, 175, 55, 0.2);
  --glass-border-hover: rgba(212, 175, 55, 0.5);

  /* Brand Colors */
  --gold-primary: #D4AF37;
  --gold-light: #F5E6CA;
  --gold-dark: #B8960C;
  --silver: #C0C0C0;
  --silver-light: #E8E8E8;

  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --text-muted: rgba(255, 255, 255, 0.5);

  /* Gradients */
  --gradient-gold: linear-gradient(135deg, #D4AF37 0%, #F5E6CA 50%, #D4AF37 100%);
  --gradient-gold-hover: linear-gradient(135deg, #F5E6CA 0%, #D4AF37 50%, #F5E6CA 100%);
  --gradient-dark: linear-gradient(180deg, #0f0f0f 0%, #161616 100%);

  /* Typography */
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

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

  /* Effects */
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.3);
  --shadow-gold: 0 4px 30px rgba(212, 175, 55, 0.15);
  --shadow-gold-strong: 0 8px 40px rgba(212, 175, 55, 0.25);
  --blur-glass: blur(20px);
  --transition: 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
  --transition-fast: 0.2s ease;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 30px;

  /* Container */
  --container-max: 1200px;
  --container-padding: 1.5rem;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

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);
  margin-bottom: var(--space-sm);
}

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

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

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

ul, ol {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Section */
.section {
  padding: var(--space-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-title {
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.section-divider {
  width: 60px;
  height: 2px;
  background: var(--gradient-gold);
  margin: var(--space-md) auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 1rem 2rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--gradient-gold);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background: var(--gradient-gold-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold-strong);
}

.btn-outline {
  background: transparent;
  color: var(--gold-primary);
  border: 1px solid var(--gold-primary);
}

.btn-outline:hover {
  background: var(--gold-primary);
  color: var(--bg-primary);
  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(--gold-primary);
}

/* Form Elements */
input,
textarea,
select {
  width: 100%;
  padding: 1rem 1.25rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text-primary);
  background: var(--bg-glass);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  backdrop-filter: var(--blur-glass);
  transition: var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--gold-primary);
  box-shadow: var(--shadow-gold);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

label {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Flex Utilities */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.flex-column {
  flex-direction: column;
}

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* Text Utilities */
.text-center { text-align: center; }
.text-gold { color: var(--gold-primary); }
.text-muted { color: var(--text-muted); }
.text-uppercase { text-transform: uppercase; }
.letter-spacing { letter-spacing: 0.15em; }

/* Spacing Utilities */
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

/* Visibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Selection */
::selection {
  background: var(--gold-primary);
  color: var(--bg-primary);
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--gold-primary);
  border-radius: 4px;
}

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