@import url('tokens.css');
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,300;1,400&family=Jost:wght@300;400;500&display=swap');

/* ─── Reset ───────────────────────────────────────────────── */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

/* Global focus ring — amber, consistent across all interactive elements */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Skip-to-content link — visually hidden until focused */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 200;
  padding: var(--space-2) var(--space-6);
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: top 0.15s ease;
}
.skip-link:focus {
  top: var(--space-4);
  outline: none;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-ui);
  font-size: var(--text-base);
  font-weight: 300;
  line-height: 1.6;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

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

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

ul {
  list-style: none;
}

/* ─── Typography ──────────────────────────────────────────── */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: 0.01em;
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

.display {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: 300;
  letter-spacing: 0.02em;
  line-height: 1.05;
}

.label {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

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

/* ─── Layout ──────────────────────────────────────────────── */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: var(--space-24);
}

.section--tight {
  padding-block: var(--space-16);
}

.page-header {
  padding-block: var(--space-16) var(--space-12);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-12);
}

.page-header .label {
  margin-bottom: var(--space-3);
}

/* ─── Navigation ──────────────────────────────────────────── */

.site-nav {
  position: fixed;
  top: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  /* glass effect */
  background: rgba(17, 17, 17, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--color-text);
  white-space: nowrap;
}

@media (max-width: 600px) {
  /* Collapse brand text to "NK" monogram — full title lives in the hero */
  .nav-brand {
    font-size: 0;
  }
  .nav-brand::after {
    content: "NK";
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--color-accent);
  }
  /* Tighten link spacing so all three fit comfortably */
  .nav-links {
    gap: var(--space-6);
  }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-links a {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--color-text);
}

.nav-links a[aria-current="page"] {
  color: var(--color-accent);
}

/* nav offset for fixed bar */
.nav-offset {
  height: var(--nav-height);
}

/* ─── Footer ──────────────────────────────────────────────── */

.site-footer {
  margin-top: auto;
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.site-footer p {
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

/* ─── Hero ────────────────────────────────────────────────── */

.hero {
  position: relative;
  width: 100%;
  height: 100dvh;
  overflow: hidden;
  background-color: #0a0a0a;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Radial scrim — soft dark ellipse centered on the text zone.
   Provides ~40% darkening at the centre where the title sits,
   fading to zero at the frame edges. Imperceptible on dark images;
   meaningful contrast on bright ones (e.g. ice, sky, sand). */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: radial-gradient(
    ellipse 75% 55% at 50% 50%,
    rgba(0, 0, 0, 0.42) 0%,
    transparent 70%
  );
  pointer-events: none;
}

/* slide container — JS will populate this */
.hero-slides {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.hero-slide.is-active {
  opacity: 1;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* static placeholder shown before JS hydrates */
.hero-placeholder {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #0d0d0d 0%, #181818 100%);
}

.hero-overlay {
  position: relative;
  z-index: 2;
  text-align: center;
  padding-inline: var(--gutter);
  pointer-events: none;
  user-select: none;
  animation: heroOverlayIn 1.8s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes heroOverlayIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, var(--text-5xl));
  font-weight: 500;
  letter-spacing: 0.04em;
  color: rgba(240, 237, 232, 0.95);
  line-height: 1.1;
  /* Three-layer shadow: sharp edge → mid diffuse → wide halo.
     The scrim handles macro contrast; the shadow handles letterform
     crispness at the boundary between stroke and background. */
  text-shadow:
    0 1px 3px  rgba(0, 0, 0, 0.70),
    0 4px 16px rgba(0, 0, 0, 0.50),
    0 8px 40px rgba(0, 0, 0, 0.35);
}

.hero-subtitle {
  margin-top: var(--space-4);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(240, 237, 232, 0.70);
  text-shadow:
    0 1px 3px  rgba(0, 0, 0, 0.70),
    0 4px 16px rgba(0, 0, 0, 0.50),
    0 8px 40px rgba(0, 0, 0, 0.35);
}

/* ─── Section headings ────────────────────────────────────── */

.section-heading {
  display: flex;
  align-items: baseline;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.section-heading h2 {
  font-size: var(--text-2xl);
}

.section-heading a {
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition);
  margin-left: auto;
}

.section-heading a:hover {
  color: var(--color-accent);
}

/* ─── Category Tiles ──────────────────────────────────────── */

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
}

@media (max-width: 900px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .category-grid {
    grid-template-columns: 1fr;
  }
}

.category-tile {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background-color: var(--color-surface);
  cursor: pointer;
  display: block;
}

.category-tile img {
  /* position: relative + z-index so the img paints above .tile-bg (position:absolute) */
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.4s ease, filter var(--transition), transform var(--transition);
  transform-origin: center;
}

.category-tile img.loaded {
  opacity: 1;
}

/* placeholder gradient when no image */
.category-tile .tile-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, #181818, #0f0f0f);
}

.category-tile:hover img,
.category-tile:hover .tile-bg {
  filter: var(--tile-brightness-hover);
  transform: scale(1.02);
}

.category-tile::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, transparent 55%);
  pointer-events: none;
}

.category-tile-info {
  position: absolute;
  bottom: 0;
  inset-inline: 0;
  z-index: 2;
  padding: var(--space-6);
}

.category-tile-info h3 {
  font-size: var(--text-xl);
  font-weight: 300;
  color: var(--color-text);
}

.category-tile-border {
  position: absolute;
  inset: 0;
  border: 2px solid transparent;
  pointer-events: none;
  transition: border-color var(--transition);
  z-index: 3;
}

.category-tile:hover .category-tile-border {
  border-color: var(--color-accent);
}

/* ─── Latest Albums strip ─────────────────────────────────── */

.albums-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

@media (max-width: 900px) {
  .albums-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .albums-strip {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
  }
}

.album-tile {
  display: block;
  cursor: pointer;
}

.album-tile-cover {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background-color: var(--color-surface);
  margin-bottom: var(--space-3);
}

.album-tile-cover img {
  /* position: relative + z-index so the img paints above .tile-bg (position:absolute) */
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.4s ease, filter var(--transition), transform var(--transition);
  transform-origin: center;
}

.album-tile-cover img.loaded {
  opacity: 1;
}

/* Desktop only — pointer devices with true hover capability */
@media (hover: hover) {
  .album-tile:hover .album-tile-cover img {
    filter: var(--tile-brightness-hover);
    transform: scale(1.02);
  }

  .album-tile:hover .tile-accent-border {
    border-color: var(--color-accent);
  }
}

.album-tile-cover .tile-bg {
  position: absolute;
  inset: 0;
  background: var(--color-surface);
}

.album-tile-cover .tile-accent-border {
  position: absolute;
  inset: 0;
  border: 2px solid transparent;
  pointer-events: none;
  transition: border-color var(--transition);
  z-index: 2;
}

.album-tile-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.album-tile-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.3;
}

.album-tile-sub {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}

/* ─── Album grid (placeholder) ────────────────────────────── */

.album-grid {
  columns: 3;
  column-gap: 3px;
}

@media (max-width: 900px) {
  .album-grid { columns: 2; }
}

@media (max-width: 480px) {
  .album-grid { columns: 1; }
}

.album-grid-item {
  break-inside: avoid;
  margin-bottom: 3px;
  position: relative;
  overflow: hidden;
  background-color: var(--color-surface);
  cursor: pointer;
  display: block;
}

.album-grid-item img {
  width: 100%;
  height: auto; /* let aspect-ratio drive height; never override to fixed px */
  display: block;
  opacity: 0;
  transition: opacity 0.4s ease, filter var(--transition);
}

.album-grid-item img.loaded {
  opacity: 1;
}

.album-grid-item:hover img {
  filter: var(--tile-brightness-hover);
}

/* ─── About page ──────────────────────────────────────────── */

.about-body {
  max-width: 640px;
  margin-inline: auto;
  padding-block: var(--space-24);
}

.about-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background-color: var(--color-surface);
  margin-inline: auto;
  margin-bottom: var(--space-8);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.about-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-body h1 {
  font-size: var(--text-3xl);
  text-align: center;
  margin-bottom: var(--space-6);
}

.about-body p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.8;
}

.about-body p:first-of-type {
  color: var(--color-text);
  font-size: var(--text-lg);
  font-family: var(--font-display);
  line-height: 1.6;
}

/* ─── 404 page ────────────────────────────────────────────── */

.not-found {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-16);
}

.not-found-inner {
  max-width: 480px;
}

.not-found-code {
  font-family: var(--font-display);
  font-size: clamp(5rem, 20vw, 10rem);
  font-weight: 300;
  color: var(--color-border);
  line-height: 1;
  margin-bottom: var(--space-4);
}

.not-found-inner h1 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}

.not-found-inner p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}

.btn {
  display: inline-block;
  padding: var(--space-3) var(--space-8);
  border: 1px solid var(--color-border);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition), border-color var(--transition);
}

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

/* ─── Entrance animations ─────────────────────────────────── */

/* Tiles animate in when rendered by JS */
.category-tile,
.album-tile {
  animation: tileIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* Stagger each tile slightly */
.category-tile:nth-child(1), .album-tile:nth-child(1) { animation-delay: 0ms;   }
.category-tile:nth-child(2), .album-tile:nth-child(2) { animation-delay: 60ms;  }
.category-tile:nth-child(3), .album-tile:nth-child(3) { animation-delay: 120ms; }
.category-tile:nth-child(4), .album-tile:nth-child(4) { animation-delay: 180ms; }

@keyframes tileIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Loading shimmer ─────────────────────────────────────── */

/* Pulse the placeholder background while images are loading */
.album-tile-cover .tile-bg,
.category-tile .tile-bg {
  animation: shimmerPulse 1.8s ease-in-out infinite;
}

/* Stop pulsing once the real image has loaded */
.album-tile-cover:has(img.loaded) .tile-bg,
.category-tile:has(img.loaded) .tile-bg {
  animation: none;
}

@keyframes shimmerPulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.45; }
}

/* ─── Utility ─────────────────────────────────────────────── */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}