/* =============================================
   DESIGN TOKENS
   ============================================= */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Inter', 'Helvetica Neue', sans-serif;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-wide: 1200px;
}

/* =============================================
   COLOR — WARM IVORY + MUTED ESPRESSO
   ============================================= */
:root,
[data-theme="light"] {
  --color-bg: #f8f6f1;
  --color-surface: #ffffff;
  --color-surface-2: #f3f1ec;
  --color-divider: #e4e0d8;
  --color-border: #d6d1c7;
  --color-text: #2c2823;
  --color-text-muted: #8a847a;
  --color-text-faint: #b5b0a6;
  --color-primary: #6b5c4c;
  --color-primary-hover: #554839;
  --color-accent: #9a7b5e;
  --shadow-sm: 0 1px 3px rgba(44, 40, 35, 0.06);
  --shadow-md: 0 4px 16px rgba(44, 40, 35, 0.08);
  --shadow-lg: 0 12px 40px rgba(44, 40, 35, 0.12);
}

[data-theme="dark"] {
  --color-bg: #1a1816;
  --color-surface: #242120;
  --color-surface-2: #2d2a27;
  --color-divider: #3a3632;
  --color-border: #4a453f;
  --color-text: #e4e0d8;
  --color-text-muted: #9a958c;
  --color-text-faint: #635e56;
  --color-primary: #c4a882;
  --color-primary-hover: #d4bc9a;
  --color-accent: #c4a882;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #1a1816;
    --color-surface: #242120;
    --color-surface-2: #2d2a27;
    --color-divider: #3a3632;
    --color-border: #4a453f;
    --color-text: #e4e0d8;
    --color-text-muted: #9a958c;
    --color-text-faint: #635e56;
    --color-primary: #c4a882;
    --color-primary-hover: #d4bc9a;
    --color-accent: #c4a882;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.4);
  }
}

/* =============================================
   HEADER
   ============================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-divider);
  backdrop-filter: blur(12px);
}

.header-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.logo {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.header-tagline {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.theme-toggle {
  margin-left: auto;
  padding: var(--space-2);
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

/* =============================================
   HERO
   ============================================= */
.hero {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-6) clamp(var(--space-8), 4vw, var(--space-16));
  text-align: center;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 300;
  font-style: italic;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.hero-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.7;
}

/* =============================================
   BOOTS GRID
   ============================================= */
.boots-grid {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 var(--space-6) var(--space-16);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(var(--space-6), 3vw, var(--space-10));
}

@media (max-width: 768px) {
  .boots-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

/* =============================================
   BOOT CARD
   ============================================= */
.boot-card {
  cursor: pointer;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  transition: transform 350ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 350ms cubic-bezier(0.16, 1, 0.3, 1);
}

.boot-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-image-wrap {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--color-surface-2);
}

.card-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.boot-card:hover .card-image-wrap img {
  transform: scale(1.03);
}

.card-color-dots {
  position: absolute;
  bottom: var(--space-3);
  left: var(--space-3);
  display: flex;
  gap: var(--space-2);
}

.color-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.8);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  transition: transform var(--transition-interactive);
}

.color-dot:hover {
  transform: scale(1.2);
}

.color-dot.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary);
}

.card-info {
  padding: var(--space-4) var(--space-5) var(--space-5);
}

.card-brand {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-1);
}

.card-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.card-detail {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* =============================================
   MODAL
   ============================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms ease;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  max-width: 960px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: translateY(20px);
  transition: transform 350ms cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-lg);
}

.modal-overlay.open .modal {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  z-index: 10;
  padding: var(--space-2);
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.modal-close:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.modal-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 400px;
}

@media (max-width: 768px) {
  .modal-body {
    grid-template-columns: 1fr;
  }
}

.modal-gallery {
  background: var(--color-surface-2);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.modal-image-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

.modal-image-wrap img {
  max-height: 420px;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.modal-thumbs {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  padding-bottom: var(--space-2);
}

.modal-thumb {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity var(--transition-interactive);
  border: 2px solid transparent;
  flex-shrink: 0;
}

.modal-thumb:hover {
  opacity: 0.8;
}

.modal-thumb.active {
  opacity: 1;
  border-color: var(--color-primary);
}

.modal-info {
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.modal-brand {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.modal-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text);
}

.modal-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.modal-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.detail-row {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: var(--space-3);
  align-items: baseline;
}

.detail-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.detail-value {
  font-size: var(--text-sm);
  color: var(--color-text);
}

.modal-colors {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.modal-colors-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.modal-color-options {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.modal-color-btn {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  background: var(--color-surface);
  cursor: pointer;
}

.modal-color-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
}

.modal-color-btn.active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-surface-2);
}

.modal-link {
  display: inline-block;
  font-size: var(--text-sm);
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: 0.02em;
  margin-top: auto;
  padding-top: var(--space-4);
}

.modal-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* =============================================
   FOOTER
   ============================================= */
footer {
  text-align: center;
  padding: var(--space-10) var(--space-6);
  border-top: 1px solid var(--color-divider);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

footer p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: 0 auto;
}

footer a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
}

footer a:hover {
  color: var(--color-text-muted);
}

/* =============================================
   SCROLL REVEAL
   ============================================= */
.boot-card {
  opacity: 0;
  transform: translateY(24px);
}

.boot-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}