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

/* Color Variables */
:root {
  --bg-primary: #0A0A0C;       /* Obsidian black */
  --bg-secondary: #16161A;     /* Sleek charcoal card BG */
  --bg-tertiary: #1E1E24;      /* Interactive borders/hover BG */
  
  --accent-cyan: #06B6D4;      /* Electric Cyan */
  --accent-cyan-hover: #0891B2;
  
  --text-main: #FFFFFF;
  --text-muted: #8E919A;
  --text-light: #FFFFFF;
  
  --border-color: #2D2D35;     /* Dark Slate Gray border */
  --border-focus: #06B6D4;
  
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 28px;
  
  --transition-smooth: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  --shadow-lg: 0 20px 40px rgba(0,0,0,0.6);
  
  --glow-color: rgba(6, 182, 212, 0.08); /* Default Cyan glow */
}

/* Reset and Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* Dynamic Ambient Glow effect */
body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 800px;
  background: radial-gradient(circle at top, var(--glow-color) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
  transition: var(--transition-smooth);
}

/* Glow Variations classes */
.glow-midnight {
  --glow-color: rgba(30, 58, 138, 0.25); /* Deep dark blue */
}

.glow-spacegray {
  --glow-color: rgba(142, 145, 154, 0.15); /* Metallic gray */
}

.glow-silver {
  --glow-color: rgba(255, 255, 255, 0.12); /* Silver/white */
}

.glow-starlight {
  --glow-color: rgba(199, 167, 92, 0.18); /* Pale gold */
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.03em;
}

p {
  color: var(--text-muted);
}

/* Utilities */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.text-cyan { color: var(--accent-cyan); }
.text-muted { color: var(--text-muted); }

/* Header Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(10, 10, 12, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 20px 0;
}

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

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  text-decoration: none;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.5px;
}

.logo span {
  color: var(--accent-cyan);
}

.lang-switch-btn {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-smooth);
  margin-right: 15px;
}

.lang-switch-btn:hover {
  color: var(--text-main);
}

.nav-cta-btn {
  background-color: var(--text-main);
  color: var(--bg-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 10px 22px;
  border-radius: 100px;
  transition: var(--transition-smooth);
}

.nav-cta-btn:hover {
  background-color: var(--accent-cyan);
  color: var(--text-light);
  transform: translateY(-1px);
}

/* Subheader Navigation */
.site-subheader {
  position: sticky;
  top: 77px;
  z-index: 99;
  background-color: rgba(10, 10, 12, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
  transition: var(--transition-smooth);
}

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

.subheader-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-main);
}

.subheader-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.subheader-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 400;
  transition: var(--transition-smooth);
}

.subheader-nav a:hover, .subheader-nav a.active {
  color: var(--text-main);
}

.subheader-nav a.subheader-cta {
  background-color: #0071E3;
  color: #FFFFFF;
  padding: 4px 12px;
  border-radius: 980px;
  font-size: 0.75rem;
  font-weight: 500;
}

.subheader-nav a.subheader-cta:hover {
  background-color: #147CE5;
}

/* Hero Section */
.hero-section {
  padding: 100px 0 80px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--accent-cyan);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 2rem;
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 4.8rem);
  line-height: 1.05;
  margin-bottom: 1.5rem;
  background: linear-gradient(180deg, #FFFFFF 0%, #A3A3A8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  max-width: 680px;
  margin: 0 auto 3rem;
  line-height: 1.7;
}

.hero-btns {
  display: flex;
  justify-content: center;
  gap: 15px;
}

/* Configurator Layout split screens */
.configurator-section {
  padding: 40px 0 100px;
}

.configurator-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 4.5rem;
  align-items: start;
}

/* Left Column: Visual display */
.visual-column {
  position: sticky;
  top: 100px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 2.2rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.macbook-viewport {
  width: 100%;
  aspect-ratio: 1/1;
  overflow: hidden;
  border-radius: var(--border-radius-md);
  position: relative;
  background-color: #000;
  border: 1px solid rgba(255,255,255,0.03);
}

.macbook-viewport img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: opacity 0.35s ease, transform 0.6s ease;
}

.color-indicator-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
}

.color-indicator-row span {
  font-weight: 500;
  font-size: 0.95rem;
}

/* Interactive Color Swatch presets */
.color-presets-list {
  display: flex;
  gap: 12px;
}

.color-preset-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--bg-primary);
  outline: 1px solid var(--border-color);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.color-preset-btn:hover {
  transform: scale(1.1);
}

.color-preset-btn.active {
  outline: 2px solid var(--accent-cyan);
}

.color-preset-btn.color-midnight { background-color: #2E3C4B; }
.color-preset-btn.color-spacegray { background-color: #5F6166; }
.color-preset-btn.color-silver { background-color: #E3E4E6; }
.color-preset-btn.color-starlight { background-color: #F0E4D3; }

/* Right Column: Selections config panel */
.selections-column {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.config-group-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 12px;
}

/* Interactive Configuration Card grids */
.config-options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.config-card {
  position: relative;
}

.config-card input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.config-card-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.config-card-label:hover {
  border-color: rgba(255,255,255,0.15);
  background-color: var(--bg-tertiary);
}

.config-card input:checked + .config-card-label {
  border-color: var(--accent-cyan);
  background-color: rgba(6, 182, 212, 0.03);
}

.config-details {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.config-name {
  font-weight: 600;
  font-size: 1rem;
}

.config-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.config-price {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
}

.config-card input:checked + .config-card-label .config-price {
  color: var(--accent-cyan);
}

/* Form details */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
}

.form-input, .form-textarea {
  width: 100%;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 14px;
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  background-color: var(--bg-tertiary);
}

/* Shipping choices */
.shipping-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.shipping-option {
  position: relative;
}

.shipping-option input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.shipping-option-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.shipping-option-label:hover {
  border-color: rgba(255,255,255,0.1);
}

.shipping-option input:checked + .shipping-option-label {
  border-color: var(--accent-cyan);
  background-color: rgba(6, 182, 212, 0.03);
}

.shipping-option-label .radio-bullet {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}

.shipping-option-label .radio-bullet::before {
  content: '';
  width: 16px;
  height: 16px;
  border: 2px solid var(--border-color);
  border-radius: 50%;
  display: inline-block;
  transition: var(--transition-smooth);
}

.shipping-option input:checked + .shipping-option-label .radio-bullet::before {
  border-color: var(--accent-cyan);
  background-color: var(--accent-cyan);
  box-shadow: inset 0 0 0 3px var(--bg-secondary);
}

.shipping-price {
  font-weight: 700;
  color: var(--accent-cyan);
}

/* Dynamic calculation values invoice cards */
.invoice-summary {
  margin: 2rem 0;
  padding: 1.8rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
}

.invoice-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.invoice-row:last-child {
  margin-bottom: 0;
}

.invoice-row.total-row {
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px dashed var(--border-color);
  font-size: 1.3rem;
  font-weight: 700;
}

.invoice-row.total-row .val {
  color: var(--accent-cyan);
  font-size: 1.4rem;
}

/* Quantity input controllers */
.qty-selector {
  display: inline-flex;
  align-items: center;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
}

.qty-btn {
  background: transparent;
  border: none;
  color: var(--text-main);
  width: 44px;
  height: 44px;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.qty-btn:hover {
  background-color: var(--bg-tertiary);
}

.qty-input {
  width: 50px;
  height: 44px;
  border: none;
  border-left: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-main);
  text-align: center;
  font-size: 1rem;
  font-weight: 600;
}

/* Buttons styles */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 16px 30px;
  background-color: var(--accent-cyan);
  color: var(--text-light);
  border: none;
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-primary:hover {
  background-color: var(--accent-cyan-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.25);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 16px 30px;
  background: transparent;
  border: 1.5px solid var(--border-color);
  color: var(--text-main);
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-secondary:hover {
  background-color: var(--bg-secondary);
  border-color: var(--text-main);
}

/* Form validation fallbacks */
.user-invalid-fallback {
  border-color: var(--accent-cyan) !important;
  background-color: rgba(6, 182, 212, 0.01) !important;
}

.user-valid-fallback {
  border-color: var(--border-color) !important;
}

.validation-error-msg {
  color: var(--accent-cyan);
  font-size: 0.8rem;
  margin-top: 5px;
  font-weight: 500;
  display: none;
}

/* Customer Reviews cards */
.reviews-section {
  padding: 80px 0;
  background-color: #050507;
  border-top: 1px solid var(--border-color);
}

.reviews-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 3.5rem;
}

.review-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 2.2rem;
  box-shadow: var(--shadow-lg);
}

.review-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
}

.review-author {
  font-weight: 600;
}

.review-stars {
  color: var(--accent-cyan);
  font-size: 0.9rem;
}

.review-text {
  font-style: italic;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* FAQ Accordion list */
.faq-section {
  padding: 80px 0;
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border-color);
}

.faq-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 800px;
  margin: 3.5rem auto 0;
}

.faq-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.faq-question {
  padding: 20px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  color: var(--text-main);
}

.faq-question i {
  transition: transform 0.3s ease;
  color: var(--accent-cyan);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  background-color: rgba(255,255,255,0.002);
}

.faq-content p {
  padding: 0 20px 20px;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.faq-item.active {
  border-color: var(--accent-cyan);
}

.faq-item.active .faq-content {
  max-height: 200px;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

/* Footer Section */
footer {
  padding: 60px 0;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  color: var(--text-muted);
  text-align: center;
}

.footer-logo {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.footer-logo span {
  color: var(--accent-cyan);
}

.footer-socials {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 1.5rem 0;
}

.footer-socials a {
  color: var(--text-muted);
  font-size: 1.25rem;
  transition: var(--transition-smooth);
}

.footer-socials a:hover {
  color: var(--accent-cyan);
}

/* Editorial Lookbook Layout */
.lookbook-section {
  padding: 100px 0;
}

.lookbook-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 5rem;
  align-items: center;
}

.lookbook-visual {
  width: 100%;
}

.lookbook-viewport {
  width: 100%;
  aspect-ratio: 16/10;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  background-color: #000;
}

.lookbook-viewport img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.lookbook-viewport:hover img {
  transform: scale(1.02);
}

.lookbook-details {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.lookbook-details h2 {
  font-size: 2.6rem;
  color: #FFF;
  line-height: 1.15;
}

.lookbook-details p {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-muted);
}

/* Responsive Queries */
@media (max-width: 991px) {
  .configurator-grid {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }

  .visual-column {
    position: relative;
    top: 0;
  }

  .site-header .container {
    flex-direction: column;
    gap: 12px;
  }

  .site-subheader {
    top: 145px;
  }

  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .lookbook-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-bottom: 60px !important;
  }

  .lookbook-grid[style*="direction: rtl"] {
    direction: ltr !important;
  }

  .lookbook-details {
    direction: ltr !important;
  }
}

@media (max-width: 480px) {
  .visual-column, .checkout-card {
    padding: 1.5rem;
  }

  .hero-btns {
    flex-direction: column;
    gap: 10px;
  }

  .btn-primary, .btn-secondary {
    width: 100%;
  }

  .config-card-label {
    padding: 14px 18px;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}