/* Hallmark · pre-emit critique: P5 H5 E5 S5 R5 V5 */
/* Hallmark · macrostructure: Atelier Gallery · theme: Atelier · genre: editorial */

:root {
  --color-paper: oklch(0.975 0.008 80);
  --color-paper-muted: oklch(0.94 0.012 75);
  --color-paper-card: oklch(0.96 0.006 80);
  --color-ink: oklch(0.16 0.02 60);
  --color-ink-muted: oklch(0.48 0.02 60);
  --color-ink-faint: oklch(0.75 0.015 65);
  --color-accent: oklch(0.45 0.14 38);
  --color-border: oklch(0.88 0.01 75);
  --color-overlay: oklch(0.15 0.02 60 / 0.85);

  --font-display: "Cormorant Garamond", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", Consolas, monospace;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 7rem;

  --ease-editorial: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.25s var(--ease-editorial);
  --transition-smooth: 0.5s var(--ease-editorial);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  min-height: 100vh;
  background-color: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  color: inherit;
}

/* Typography Helpers */
.font-display { font-family: var(--font-display); }
.font-mono { font-family: var(--font-mono); }

/* Layout Structure */
.site-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Header & Nav (N6 Masthead style) */
.site-header {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: oklch(0.975 0.008 80 / 0.92);
  backdrop-filter: blur(12px);
  z-index: 100;
  transition: var(--transition-fast);
}

.masthead-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--space-md);
}

.brand-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  text-decoration: none;
  line-height: 1;
}

.brand-subtitle {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-ink-muted);
}

.category-nav {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  align-items: center;
  border-top: 1px solid oklch(0.88 0.01 75 / 0.5);
  padding-top: var(--space-sm);
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
  padding: 0.4rem 0.8rem;
  border-radius: 2px;
  transition: var(--transition-fast);
  position: relative;
}

.filter-btn:hover {
  color: var(--color-ink);
}

.filter-btn.active {
  color: var(--color-paper);
  background-color: var(--color-ink);
}

.filter-btn .count {
  font-size: 0.7rem;
  opacity: 0.6;
  margin-left: 0.3rem;
}

/* Hero Section (Atelier Style) */
.hero-section {
  padding: var(--space-xl) 0 var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-lg);
  align-items: end;
}

.hero-statement {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--color-ink);
  overflow-wrap: anywhere;
}

.hero-statement em {
  font-style: normal;
  color: var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
}

.hero-meta {
  font-size: 0.95rem;
  color: var(--color-ink-muted);
  border-left: 2px solid var(--color-ink);
  padding-left: var(--space-sm);
}

.hero-meta p {
  margin-bottom: var(--space-xs);
}

/* Portfolio Gallery Grid */
.gallery-section {
  padding: var(--space-lg) 0;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md);
}

.gallery-item {
  grid-column: span 4;
  position: relative;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.gallery-item.hidden {
  display: none;
  opacity: 0;
  transform: translateY(20px);
}

.gallery-item.span-8 {
  grid-column: span 8;
}

.gallery-item.span-6 {
  grid-column: span 6;
}

.gallery-item.span-12 {
  grid-column: span 12;
}

.card-inner {
  display: block;
  text-decoration: none;
  color: inherit;
  background-color: var(--color-paper-card);
  border: 1px solid var(--color-border);
  padding: var(--space-sm);
  transition: var(--transition-fast);
}

.card-inner:hover {
  border-color: var(--color-ink);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px oklch(0 0 0 / 0.06);
}

.image-wrapper {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-paper-muted);
  margin-bottom: var(--space-sm);
  position: relative;
}

.gallery-item.tall .image-wrapper {
  aspect-ratio: 3 / 4;
}

.gallery-item.wide .image-wrapper {
  aspect-ratio: 16 / 9;
}

.image-wrapper img {
  width: 100%;
  height: 100%;
  transition: transform 0.8s var(--ease-editorial);
  filter: grayscale(15%) contrast(102%);
}

.card-inner:hover .image-wrapper img {
  transform: scale(1.04);
  filter: grayscale(0%) contrast(105%);
}

.card-category-badge {
  position: absolute;
  top: var(--space-xs);
  right: var(--space-xs);
  background: oklch(0.975 0.008 80 / 0.9);
  backdrop-filter: blur(4px);
  padding: 0.2rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink);
  border: 1px solid var(--color-border);
}

.card-info {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 400;
  line-height: 1.2;
}

.project-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-muted);
}

.project-desc {
  font-size: 0.85rem;
  color: var(--color-ink-muted);
  margin-top: 0.3rem;
}

/* Lightbox Modal */
.lightbox-modal {
  position: fixed;
  inset: 0;
  background-color: var(--color-overlay);
  backdrop-filter: blur(16px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lightbox-modal.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-content {
  background-color: var(--color-paper);
  border: 1px solid var(--color-border);
  max-width: 1000px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--space-md);
  position: relative;
  transform: scale(0.95);
  transition: transform 0.3s var(--ease-editorial);
}

.lightbox-modal.active .lightbox-content {
  transform: scale(1);
}

.close-btn {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 1.2rem;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--color-border);
  display: grid;
  place-items: center;
  border-radius: 50%;
  transition: var(--transition-fast);
}

.close-btn:hover {
  background-color: var(--color-ink);
  color: var(--color-paper);
}

.lightbox-body {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.lightbox-img-wrap img {
  width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
}

.lightbox-details h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: var(--space-xs);
}

.lightbox-details .meta-row {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-ink-muted);
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-border);
}

.lightbox-details p {
  color: var(--color-ink-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
}

/* Footer (Ft5 Statement style) */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) 0 var(--space-md) 0;
  margin-top: var(--space-xl);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-heading {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 300;
  margin-bottom: var(--space-sm);
}

.footer-link {
  display: block;
  color: var(--color-ink-muted);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  margin-bottom: var(--space-xs);
  transition: var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-faint);
  border-top: 1px solid oklch(0.88 0.01 75 / 0.4);
  padding-top: var(--space-sm);
}

/* Password Protection Overlay */
.auth-lock-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--color-paper);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.auth-lock-overlay.unlocked {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.auth-card {
  max-width: 420px;
  width: 100%;
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  background-color: var(--color-paper-card);
  text-align: center;
  box-shadow: 0 20px 40px oklch(0 0 0 / 0.05);
}

.auth-icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
  color: var(--color-accent);
}

.auth-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 300;
  margin-bottom: var(--space-xs);
  line-height: 1.1;
}

.auth-subtitle {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-md);
}

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

.auth-input {
  width: 100%;
  padding: 0.8rem var(--space-sm);
  border: 1px solid var(--color-border);
  background: var(--color-paper);
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--color-ink);
  outline: none;
  text-align: center;
  letter-spacing: 0.2em;
  transition: var(--transition-fast);
}

.auth-input:focus {
  border-color: var(--color-ink);
}

.auth-submit-btn {
  width: 100%;
  padding: 0.8rem;
  background-color: var(--color-ink);
  color: var(--color-paper);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  border-radius: 2px;
  transition: var(--transition-fast);
}

.auth-submit-btn:hover {
  background-color: var(--color-accent);
}

.auth-error-msg {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  margin-top: var(--space-xs);
  min-height: 1.2rem;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.auth-error-msg.visible {
  opacity: 1;
}

/* Responsive Rules */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  .gallery-item {
    grid-column: span 6;
  }
  .gallery-item.span-8, .gallery-item.span-12 {
    grid-column: span 12;
  }
  .lightbox-body {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
}

@media (max-width: 600px) {
  .gallery-item {
    grid-column: span 12;
  }
  .masthead-top {
    flex-direction: column;
    gap: var(--space-xs);
  }
  .hero-statement {
    font-size: 2.2rem;
  }
}