/* ============================================================
   KHALAJ AMANI CARPETS – Enterprise Design System
   Pure modern CSS – no frameworks
   ============================================================ */

:root {
  /* Brand Colors from Logo */
  --color-primary: #8B0000;       /* Deep red */
  --color-primary-dark: #5C0000;
  --color-accent: #D4AF37;        /* Gold */
  --color-accent-light: #F5E6C8;
  --color-navy: #1A2A4A;
  --color-blue: #2E5A88;
  --color-dark: #1A1A1A;
  --color-text: #2C2C2C;
  --color-text-light: #5A5A5A;
  --color-bg: #FAF9F7;
  --color-bg-alt: #F0EDE8;
  --color-white: #FFFFFF;
  --color-border: #E5E0D8;

  /* Typography */
  --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Cormorant Garamond', Georgia, serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;
  --space-4xl: 6rem;

  /* Layout */
  --container: 1280px;
  --header-h: 80px;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; }

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-dark);
}
h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h3 { font-size: clamp(1.3rem, 3vw, 1.75rem); }
p { margin-bottom: 1rem; color: var(--color-text-light); }
.lead { font-size: 1.2rem; line-height: 1.7; }

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-lg);
}
.section { padding-block: var(--space-3xl); }
.section-alt { background: var(--color-bg-alt); }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--space-2xl); }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-xl); }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-lg); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-h);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: var(--space-lg);
}
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.logo img {
  height: 52px;
  width: auto;
}
.logo-text {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}
.nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
}
.nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}
.nav a:hover::after,
.nav a.active::after { width: 100%; }
.nav a:hover { color: var(--color-primary); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--color-primary);
  color: white;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}
.btn-outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--color-primary);
  color: white;
}
.btn-gold {
  background: var(--color-accent);
  color: var(--color-dark);
}
.btn-gold:hover {
  background: #c9a227;
}

/* Mobile Nav */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-dark);
}
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-lg);
    transform: translateY(-120%);
    opacity: 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
  }
  .nav.open {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Hero */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #1a1a1a 0%, #3d0a0a 50%, #1a2a4a 100%);
  color: white;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../public/images/logo.jpg') center/cover no-repeat;
  opacity: 0.15;
  filter: blur(2px);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}
.hero h1 {
  color: white;
  margin-bottom: var(--space-lg);
  text-shadow: 0 2px 20px rgba(0,0,0,0.4);
}
.hero .lead {
  color: rgba(255,255,255,0.9);
  margin-bottom: var(--space-2xl);
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* Product Cards */
.product-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.product-card .img-wrap {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--color-bg-alt);
  position: relative;
}
.product-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.product-card:hover img { transform: scale(1.05); }
.product-card .body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.product-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.4rem;
}
.product-card .meta {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}
.product-card .price {
  margin-top: auto;
  font-weight: 700;
  color: var(--color-primary);
  font-size: 1.05rem;
}

/* Section Titles */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}
.section-header .eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

/* About / Content Blocks */
.content-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}
.content-block.reverse { direction: rtl; }
.content-block.reverse > * { direction: ltr; }
@media (max-width: 800px) {
  .content-block { grid-template-columns: 1fr; }
  .content-block.reverse { direction: ltr; }
}

/* FAQ Accordion */
.faq-item {
  background: white;
  border-radius: var(--radius);
  margin-bottom: var(--space-md);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  text-align: left;
  padding: var(--space-lg);
  background: none;
  border: none;
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-dark);
}
.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--color-primary);
  transition: transform var(--transition);
}
.faq-item.open .faq-question::after { content: '−'; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
  padding: 0 var(--space-lg);
}
.faq-item.open .faq-answer {
  max-height: 500px;
  padding-bottom: var(--space-lg);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}
@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; }
}
.contact-info h3 { margin-bottom: var(--space-md); }
.contact-info p, .contact-info a {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: var(--space-md);
  color: var(--color-text-light);
}
.contact-form {
  background: white;
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.form-group {
  margin-bottom: var(--space-lg);
}
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* Footer */
.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.8);
  padding-block: var(--space-3xl) var(--space-xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 500px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.footer-brand img { height: 60px; margin-bottom: var(--space-md); }
.footer-brand p { font-size: 0.9rem; }
.footer-col h4 {
  color: white;
  font-size: 1rem;
  margin-bottom: var(--space-md);
  font-family: var(--font-body);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.footer-col a {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
}
.footer-col a:hover { color: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: 0.85rem;
}
.social-links {
  display: flex;
  gap: var(--space-md);
}
.social-links a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}
.social-links a:hover { background: var(--color-primary); }

/* Utility */
.text-center { text-align: center; }
.mt-1 { margin-top: var(--space-md); }
.mt-2 { margin-top: var(--space-xl); }
.mb-2 { margin-bottom: var(--space-xl); }
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--color-accent-light);
  color: var(--color-primary-dark);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Loading / Skeleton */
.skeleton {
  background: linear-gradient(90deg, #eee 25%, #f5f5f5 50%, #eee 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius);
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Print & Accessibility */
@media print {
  .site-header, .site-footer, .nav-toggle { display: none; }
}
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}