/* ==========================================================================
   Maison Nirya — Luxury Haute Couture & Bridal Fashion
   Plain HTML, CSS & Bootstrap 5 Stylesheet (Framer Motion Replaced with Keyframes)
   ========================================================================== */

:root {
  --color-ivory: #ffffff;
  --color-warm-white: #fffdfa;
  --color-black: #0a0a0a;
  --color-charcoal: #1a1a1a;
  --color-beige: #e7e1d6;
  --color-champagne: #e6d9c3;
  --color-gold: #b6976c;
  --color-gold-dim: rgba(182, 151, 108, 0.4);
  --color-line: #d8d2c6;

  --bg-page: var(--color-ivory);
  --bg-surface: #f9f8f6;
  --text-primary: var(--color-charcoal);
  --text-secondary: rgba(26, 26, 26, 0.75);
  --border-subtle: var(--color-line);
  --shadow-navbar: 0 1px 24px rgba(10, 10, 10, 0.08);
  --transition-theme: background-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), color 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s cubic-bezier(0.16, 1, 0.3, 1);

  --font-display: 'Cormorant Garamond', serif;
  --font-sans: 'Jost', sans-serif;

  --size-display: clamp(2.75rem, 5.5vw, 5.75rem);
  --size-h1: clamp(2.25rem, 4vw, 4rem);
  --size-h2: clamp(1.75rem, 3vw, 2.75rem);
  --size-small: 0.875rem;
  --size-caption: 0.75rem;

  --header-h: 84px;
}

[data-theme='dark'] {
  --color-ivory: #121212;
  --color-charcoal: #ffffff;
  --color-line: #2e2e2e;

  --bg-page: var(--color-ivory);
  --bg-surface: #1a1a1a;
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --border-subtle: #333333;
  --shadow-navbar: 0 1px 24px rgba(0, 0, 0, 0.5);
}

/* Base resets & typography */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: var(--transition-theme);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; background: none; border: none; color: inherit; }
ul { list-style: none; margin: 0; padding: 0; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 400;
  margin: 0;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

/* Custom CSS Keyframe Animations (Replacing Framer Motion) */
@keyframes fadeInSlideUp {
  0% {
    opacity: 0;
    transform: translateY(30px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

@keyframes scaleIn {
  0% { transform: scale(1.08); opacity: 0.9; }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes scrollIndicator {
  0% { transform: scaleY(0); transform-origin: top; opacity: 0; }
  50% { transform: scaleY(1); transform-origin: top; opacity: 1; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

.animate-fade-up {
  animation: fadeInSlideUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-fade-in {
  animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-img-anim {
  animation: scaleIn 8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.scroll-line {
  display: block;
  width: 1px;
  height: 48px;
  background: rgba(255, 255, 255, 0.6);
  animation: scrollIndicator 2.2s cubic-bezier(0.16, 1, 0.3, 1) infinite;
}

/* Utility classes */
.eyebrow {
  font-family: var(--font-sans);
  font-size: var(--size-caption);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-secondary);
  opacity: 0.85;
  display: block;
  margin-bottom: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-sans);
  font-size: var(--size-small);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 1rem 2.1rem;
  border: 1px solid var(--text-primary);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  border-radius: 0;
}

.btn-dark {
  background: var(--text-primary);
  color: var(--bg-page);
  border-color: var(--text-primary);
}
.btn-dark:hover {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--text-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--text-primary);
}
.btn-ghost:hover {
  background: var(--text-primary);
  color: var(--bg-page);
}

.btn-ghost-light {
  background: transparent;
  color: var(--color-warm-white);
  border-color: var(--color-warm-white);
}
.btn-ghost-light:hover {
  background: var(--color-warm-white);
  color: var(--color-black);
}

.btn-gold {
  background: transparent;
  color: var(--color-gold);
  border-color: var(--color-gold);
}
.btn-gold:hover {
  background: var(--color-gold);
  color: var(--color-black);
}

.text-link {
  position: relative;
  font-size: var(--size-small);
  letter-spacing: 0.06em;
  text-decoration: none;
  display: inline-block;
  color: var(--text-primary);
}
.text-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: -3px;
  width: 0; height: 1px;
  background: currentColor;
  transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.text-link:hover::after { width: 100%; }

/* Navigation Header */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: transparent;
  color: var(--color-warm-white);
  transition: background 0.4s ease, color 0.4s ease, box-shadow 0.4s ease;
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-bottom-color: var(--border-subtle);
  box-shadow: var(--shadow-navbar);
}

.logo-img {
  height: 55px;
  width: 55px;
  object-fit: cover;
  border-radius: 6px;
  display: block;
  transition: transform 0.3s ease;
}
.logo-img:hover { transform: scale(1.04); }

.nav-link-custom {
  position: relative;
  font-size: var(--size-small);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: inherit;
  text-decoration: none;
  padding: 0.5rem 0;
}
.nav-link-custom::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: currentColor;
  transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.nav-link-custom:hover::after, .nav-link-custom.active::after { width: 100%; }
.nav-link-custom:hover, .nav-link-custom.active { color: var(--color-gold); }

/* Hero Section */
.hero-section {
  position: relative;
  height: 100vh;
  min-height: 640px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(10,10,10,0.65) 0%, rgba(10,10,10,0.1) 50%, rgba(10,10,10,0.3) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  color: var(--color-warm-white);
  padding: 0 clamp(1.5rem, 4vw, 4rem) 6.5rem;
  max-width: 760px;
}

.hero-title {
  font-size: var(--size-display);
  color: var(--color-warm-white);
  margin-bottom: 1.25rem;
}

.hero-sub {
  font-size: 1.15rem;
  font-family: var(--font-display);
  font-style: italic;
  margin: 0 0 2.25rem;
  opacity: 0.9;
}

/* Sections */
.section-padding {
  padding: 8rem 0;
}

.section-padding-sm {
  padding: 5rem 0;
}

/* Category Grid Tiles */
.category-tile {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 3/4;
  background: var(--color-beige);
}
.category-tile img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.category-tile:hover img { transform: scale(1.05); }
.category-label {
  position: absolute;
  left: 1.5rem; bottom: 1.5rem;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--color-warm-white);
  text-shadow: 0 2px 12px rgba(0,0,0,0.4);
}

/* Product Cards */
.product-card {
  position: relative;
  margin-bottom: 2rem;
}

.product-img-wrap {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  background: var(--color-beige);
}

.product-img-base, .product-img-hover {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: opacity 0.5s ease, transform 1.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.product-img-hover { opacity: 0; }
.product-img-wrap:hover .product-img-base { opacity: 0; }
.product-img-wrap:hover .product-img-hover { opacity: 1; transform: scale(1.03); }

.wishlist-btn {
  position: absolute;
  top: 1rem; right: 1rem;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  background: rgba(247,245,241,0.9);
  color: var(--color-black);
  border-radius: 50%;
  transition: color 0.3s ease;
  z-index: 10;
}
.wishlist-btn.saved { color: #e63946; }

/* Runway Film Section */
.runway-frame {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #111;
  border: 1px solid rgba(255,255,255,0.08);
}
.runway-video {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}
.runway-controls {
  position: absolute;
  bottom: 1.5rem; right: 1.5rem;
  display: flex; gap: 0.75rem;
  z-index: 10;
}
.runway-control-btn {
  background: rgba(10, 10, 10, 0.75);
  backdrop-filter: blur(8px);
  color: var(--color-warm-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.6rem 1.1rem;
  font-size: var(--size-caption);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: all 0.3s ease;
}
.runway-control-btn:hover {
  background: var(--color-warm-white);
  color: var(--color-black);
}

/* Footer */
.site-footer {
  background: var(--bg-surface);
  color: var(--text-primary);
  padding: 5rem 0 2rem;
  border-top: 1px solid var(--border-subtle);
  transition: var(--transition-theme);
}

.footer-social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--size-small);
  color: var(--text-primary);
  opacity: 0.85;
  text-decoration: none;
  transition: color 0.3s ease, opacity 0.3s ease;
}
.footer-social-link:hover {
  color: var(--color-gold);
  opacity: 1;
}

/* Modals & Drawers */
.custom-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.custom-modal-backdrop.open { display: flex; }

.custom-drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: min(440px, 100vw);
  background: var(--bg-surface);
  color: var(--text-primary);
  z-index: 2100;
  display: flex;
  flex-direction: column;
  padding: 2rem;
  transform: translateX(100%);
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: -10px 0 40px rgba(0,0,0,0.3);
}
.custom-drawer.open { transform: translateX(0); }

@media (max-width: 768px) {
  .section-padding { padding: 5rem 0; }
}

/* Extended Collections Expand/Collapse Animation */
.extended-collections {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.9s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.6s ease;
}

.extended-collections.expanded {
  max-height: 4000px;
  opacity: 1;
  margin-top: 2rem;
}

/* Offcanvas / Mobile Menu Theme Adaptability */
.offcanvas {
  background-color: var(--bg-page) !important;
  color: var(--text-primary) !important;
  transition: var(--transition-theme);
}

[data-theme='dark'] .offcanvas .btn-close {
  filter: invert(1) grayscale(100%) brightness(200%);
}

.offcanvas .nav-link-custom {
  color: var(--text-primary);
}

.offcanvas .nav-link-custom:hover,
.offcanvas .nav-link-custom.active {
  color: var(--color-gold);
}