/* ==========================================================================
   Accra Curtain Co. — Landing Page Stylesheet
   Palette: warm off-white, deep charcoal, single terracotta accent.
   Mobile-first, no external imports.
   ========================================================================== */

:root {
  /* Palette */
  --color-bg: #FAF8F5;
  --color-text: #1C1C1C;
  --color-accent: #C4603A;
  --color-accent-dark: #A34A28;
  --color-muted: #6B6B6B;
  --color-surface: #F0EDE8;
  --color-charcoal: #1C1C1C;
  --color-gold: #E0A94B;
  --color-white: #FFFFFF;

  /* Spacing scale */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  /* Typography */
  --font-body: 'Georgia', serif;
  --font-ui: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  /* Misc */
  --radius: 6px;
  --radius-pill: 999px;
  --shadow-soft: 0 12px 32px rgba(28, 28, 28, 0.12);
  --header-h: 72px;
  --maxw: 1200px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3 {
  font-family: var(--font-body);
  line-height: 1.15;
  margin: 0 0 var(--space-sm);
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 var(--space-sm);
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-2xl) 0;
}

.section-heading {
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  margin-bottom: var(--space-xs);
}

.section-sub {
  font-family: var(--font-ui);
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  margin-bottom: var(--space-lg);
}

/* Buttons ----------------------------------------------------------------- */
.btn {
  display: inline-block;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 1rem;
  padding: 0.9rem 2rem;
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background-color 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 8px 20px rgba(196, 96, 58, 0.28);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  outline: none;
}

/* ==========================================================================
   1. Header / Nav
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(250, 248, 245, 0.85);
  backdrop-filter: blur(8px);
  transition: box-shadow 0.3s ease, background-color 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 4px 18px rgba(28, 28, 28, 0.1);
  background: rgba(250, 248, 245, 0.96);
}

.nav-inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

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

.primary-nav {
  display: none;
}

.primary-nav a {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  color: var(--color-text);
  margin-left: var(--space-md);
  position: relative;
  transition: color 0.2s ease;
}

.primary-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.25s ease;
}

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

.primary-nav a:hover::after {
  width: 100%;
}

/* Hamburger */
.hamburger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(250, 248, 245, 0.98);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}

.nav-overlay.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-overlay a {
  font-family: var(--font-ui);
  font-size: 1.6rem;
  color: var(--color-text);
  transition: color 0.2s ease;
}

.nav-overlay a:hover {
  color: var(--color-accent);
}

/* ==========================================================================
   2. Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  background-image: url("https://images.unsplash.com/photo-1586023492125-27b2c045efd7?w=1920&h=1080");
  background-size: cover;
  background-position: center;
  color: var(--color-white);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(20, 20, 20, 0.85) 0%,
    rgba(20, 20, 20, 0.35) 45%,
    rgba(20, 20, 20, 0.15) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--maxw);
  margin: 0 auto;
  width: 100%;
  padding: 0 var(--space-md) var(--space-2xl);
}

.hero-content h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
  max-width: 15ch;
  margin-bottom: var(--space-sm);
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.3);
}

.hero-content .hero-sub {
  font-family: var(--font-ui);
  font-size: clamp(1rem, 2vw, 1.3rem);
  max-width: 48ch;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: var(--space-lg);
}

/* ==========================================================================
   3. Collections grid
   ========================================================================== */
.collections-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.collection-card {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius);
  cursor: pointer;
}

.collection-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.collection-card:hover img {
  transform: scale(1.08);
}

.collection-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-md);
  color: var(--color-white);
  background: linear-gradient(
    to top,
    rgba(20, 20, 20, 0.82) 0%,
    rgba(20, 20, 20, 0.1) 55%,
    rgba(20, 20, 20, 0) 100%
  );
}

.collection-overlay h3 {
  font-size: 1.4rem;
  margin: 0;
  transition: transform 0.35s ease;
}

.collection-overlay p {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  margin: var(--space-xs) 0 0;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.collection-card:hover .collection-overlay h3 {
  transform: translateY(-6px);
}

.collection-card:hover .collection-overlay p {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   4. Before / After slider
   ========================================================================== */
.transformations {
  background: var(--color-surface);
}

.slider-container {
  position: relative;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  aspect-ratio: 12 / 7;
  overflow: hidden;
  border-radius: var(--radius);
  user-select: none;
  touch-action: none;
  --slider-pos: 50;
}

.slider-container img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.before-panel {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  clip-path: inset(0 calc((100 - var(--slider-pos)) * 1%) 0 0);
}

.slider-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--slider-pos) * 1%);
  transform: translateX(-50%);
  width: 4px;
  background: var(--color-white);
  z-index: 3;
  cursor: ew-resize;
}

.slider-handle::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
}

.slider-handle svg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  color: var(--color-accent);
  pointer-events: none;
}

.slider-label {
  position: absolute;
  top: var(--space-sm);
  z-index: 4;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-white);
  background: rgba(20, 20, 20, 0.55);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-pill);
}

.label-before {
  left: var(--space-sm);
}

.label-after {
  right: var(--space-sm);
}

/* ==========================================================================
   5. Stats bar
   ========================================================================== */
.stats-bar {
  background: var(--color-charcoal);
  color: var(--color-white);
  padding: var(--space-xl) 0;
}

.stats-inner {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  text-align: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.stat-number {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.stat-label {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.75);
}

/* ==========================================================================
   6. Testimonials
   ========================================================================== */
.testimonials-track {
  display: flex;
  gap: var(--space-md);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: var(--space-sm);
}

.testimonial-card {
  scroll-snap-align: start;
  flex: 0 0 85%;
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.stars {
  display: flex;
  gap: 3px;
  color: var(--color-gold);
}

.testimonial-card blockquote {
  margin: 0;
  font-size: 1.15rem;
  font-style: italic;
}

.testimonial-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: auto;
}

.avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  flex-shrink: 0;
}

.testimonial-card cite {
  font-family: var(--font-ui);
  font-style: normal;
  font-size: 0.9rem;
  line-height: 1.3;
}

.testimonial-card cite strong {
  display: block;
  color: var(--color-text);
}

.testimonial-card cite span {
  color: var(--color-muted);
}

/* ==========================================================================
   7. Contact
   ========================================================================== */
.contact {
  background: var(--color-surface);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.contact-info p {
  font-family: var(--font-ui);
  color: var(--color-muted);
}

.contact-details {
  list-style: none;
  padding: 0;
  margin: var(--space-md) 0 0;
  font-family: var(--font-ui);
}

.contact-details li {
  margin-bottom: var(--space-xs);
}

.contact-details strong {
  color: var(--color-accent);
  margin-right: var(--space-xs);
}

.quote-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-field {
  display: flex;
  flex-direction: column;
}

.form-field label {
  font-family: var(--font-ui);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--space-xs);
}

.form-field input,
.form-field select,
.form-field textarea {
  font-family: var(--font-ui);
  font-size: 1rem;
  color: var(--color-text);
  background: transparent;
  border: none;
  border-bottom: 2px solid rgba(28, 28, 28, 0.18);
  padding: 0.6rem 0;
  transition: border-color 0.25s ease;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-bottom-color: var(--color-accent);
}

.form-field textarea {
  resize: vertical;
  min-height: 90px;
}

.form-field .error {
  color: var(--color-accent);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  margin-top: var(--space-xs);
  min-height: 1em;
}

.quote-form .btn {
  width: 100%;
}

.form-thankyou {
  padding: var(--space-lg);
  background: var(--color-white);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
  font-family: var(--font-ui);
}

.form-thankyou h3 {
  color: var(--color-accent);
}

/* ==========================================================================
   8. Footer
   ========================================================================== */
.site-footer {
  background: var(--color-charcoal);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  text-align: center;
}

.footer-inner .logo {
  color: var(--color-white);
}

.footer-tagline {
  font-family: var(--font-ui);
  color: rgba(255, 255, 255, 0.6);
  margin: 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
  font-family: var(--font-ui);
  font-size: 0.95rem;
}

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

.footer-copy {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  margin: 0;
}

/* ==========================================================================
   9. Scroll reveal utility
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .collection-card img,
  .btn {
    transition: none;
  }
}

/* ==========================================================================
   Responsive — tablet (>= 768px)
   ========================================================================== */
@media (min-width: 768px) {
  .primary-nav {
    display: flex;
    align-items: center;
  }

  .hamburger {
    display: none;
  }

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

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

  .testimonials-track {
    overflow-x: visible;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .testimonial-card {
    flex: initial;
  }

  .contact-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }
}

/* ==========================================================================
   Responsive — desktop (>= 1200px)
   ========================================================================== */
@media (min-width: 1200px) {
  .collections-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}