:root {
  --kc-night: #060b1e;
  --kc-navy: #0b1a4a;
  --kc-blue: #1e5bff;
  --kc-cyan: #36b7ff;
  --kc-white: #f4f6ff;
  --kc-card: rgba(11, 26, 74, 0.55);
  --kc-line: rgba(255, 255, 255, 0.1);
  --display: "Arial Black", "Helvetica Neue", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; }

body {
  min-height: 100vh;
  font-family: system-ui, sans-serif;
  background: var(--kc-night);
  color: var(--kc-white);
  overflow-x: hidden;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60rem 40rem at 50% -10%, rgba(30, 91, 255, 0.45), transparent 70%),
    radial-gradient(40rem 30rem at 100% 110%, rgba(54, 183, 255, 0.18), transparent 70%),
    repeating-linear-gradient(-60deg, transparent 0 38px, rgba(255, 255, 255, 0.025) 38px 40px),
    linear-gradient(180deg, var(--kc-navy), var(--kc-night) 70%);
}

a { color: var(--kc-cyan); }
a:focus-visible, button:focus-visible, select:focus-visible {
  outline: 2px solid var(--kc-white);
  outline-offset: 3px;
}

/* En-tete */

.site-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  max-width: 82rem;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
}

.brand {
  font-family: var(--display);
  font-weight: 900;
  font-style: italic;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  color: var(--kc-white);
}

.brand span {
  background: linear-gradient(90deg, var(--kc-blue), var(--kc-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tag {
  padding: 0.2rem 0.6rem;
  border: 1px solid rgba(54, 183, 255, 0.5);
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--kc-cyan);
}

.shop-link {
  margin-left: auto;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--kc-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--kc-white);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s, border-color 0.2s;
}
.shop-link:hover {
  border-color: transparent;
  background: linear-gradient(90deg, var(--kc-blue), var(--kc-cyan));
}

.hero {
  max-width: 82rem;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 1rem;
}

h1 {
  font-family: var(--display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.intro {
  margin-top: 0.5rem;
  font-size: 1rem;
  line-height: 1.6;
  opacity: 0.7;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* Barre d'outils */

main {
  max-width: 82rem;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

.toolbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  padding: 0.85rem 0;
  background: linear-gradient(180deg, var(--kc-night) 70%, transparent);
}

.filters { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.chip {
  padding: 0.5rem 1rem;
  border: 1px solid var(--kc-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--kc-white);
  font: inherit;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.chip span { margin-left: 0.25rem; opacity: 0.55; font-weight: 600; }
.chip:hover { border-color: rgba(54, 183, 255, 0.5); }
.chip[aria-pressed="true"] {
  border-color: transparent;
  background: linear-gradient(90deg, var(--kc-blue), var(--kc-cyan));
}
.chip[aria-pressed="true"] span { opacity: 0.85; }

.sort { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; }
.sort span { opacity: 0.65; }
.sort select {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--kc-line);
  border-radius: 0.5rem;
  background: var(--kc-navy);
  color: var(--kc-white);
  font: inherit;
}

.status { padding: 3rem 0; text-align: center; opacity: 0.7; }

/* Grille */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 16.5rem), 1fr));
  gap: 1.25rem;
  padding: 0;
  list-style: none;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--kc-line);
  border-radius: 1rem;
  background: var(--kc-card);
  transition: transform 0.25s, border-color 0.25s;
}
.card:hover { transform: translateY(-3px); border-color: rgba(54, 183, 255, 0.4); }

.card-media {
  position: relative;
  display: block;
  aspect-ratio: 4 / 5;
  padding: 0;
  border: 0;
  background: #0a1433;
  cursor: zoom-in;
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.card:hover .card-media img { transform: scale(1.03); }

.card-count {
  position: absolute;
  top: 0.6rem;
  left: 0.6rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: rgba(6, 11, 30, 0.75);
  font-size: 0.75rem;
  font-weight: 700;
}

.card-body { padding: 0.9rem 4.75rem 1rem 1rem; }

.card-category {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--kc-cyan);
}

.card-title {
  margin-top: 0.3rem;
  font-size: 1rem;
  line-height: 1.3;
}

.card-author {
  display: inline-block;
  margin-top: 0.35rem;
  font-size: 0.85rem;
  text-decoration: none;
  opacity: 0.8;
}
.card-author:hover { text-decoration: underline; opacity: 1; }

/* Bouton like */

.like {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.8rem;
  border: 1px solid var(--kc-line);
  border-radius: 999px;
  background: rgba(6, 11, 30, 0.6);
  color: var(--kc-white);
  font: inherit;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}
.card .like { position: absolute; right: 0.75rem; bottom: 0.9rem; }
.like svg { width: 1.1rem; height: 1.1rem; fill: none; stroke: currentColor; stroke-width: 2; }
.like:hover { border-color: rgba(54, 183, 255, 0.6); }
.like:active { transform: scale(0.92); }
.like[aria-pressed="true"] {
  border-color: transparent;
  background: linear-gradient(90deg, var(--kc-blue), var(--kc-cyan));
}
.like[aria-pressed="true"] svg { fill: currentColor; animation: pop 0.35s ease-out; }

@keyframes pop {
  50% { transform: scale(1.35); }
}

/* Visionneuse */

.viewer {
  width: min(64rem, calc(100% - 2rem));
  max-height: calc(100vh - 2rem);
  margin: auto;
  padding: 0;
  border: 1px solid var(--kc-line);
  border-radius: 1rem;
  background: var(--kc-night);
  color: var(--kc-white);
}
.viewer[open] { display: grid; grid-template-columns: 1.6fr 1fr; }
.viewer::backdrop { background: rgba(3, 6, 18, 0.85); backdrop-filter: blur(4px); }

.viewer-media {
  display: grid;
  gap: 0.5rem;
  max-height: calc(100vh - 2rem);
  overflow-y: auto;
  background: #0a1433;
}
.viewer-media img { width: 100%; height: auto; }

.viewer-info { padding: 2rem 1.5rem 1.5rem; overflow-y: auto; }
.viewer-info h2 { font-size: 1.4rem; line-height: 1.25; }
.viewer-author { margin-top: 0.5rem; font-size: 0.9rem; opacity: 0.7; }
.viewer-text { margin-top: 1rem; line-height: 1.6; opacity: 0.85; }
.viewer-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; margin-top: 1.5rem; }
.source { font-weight: 700; text-decoration: none; }
.source:hover { text-decoration: underline; }

.viewer-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 1;
  width: 2.25rem;
  height: 2.25rem;
  border: 0;
  border-radius: 50%;
  background: rgba(6, 11, 30, 0.8);
  color: var(--kc-white);
  font-size: 1rem;
  cursor: pointer;
}

@media (max-width: 720px) {
  .viewer[open] { grid-template-columns: 1fr; overflow-y: auto; }
  .viewer-media { max-height: none; overflow: visible; }
}

/* Message temporaire */

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  z-index: 20;
  transform: translateX(-50%);
  padding: 0.75rem 1.25rem;
  border-radius: 0.75rem;
  background: var(--kc-white);
  color: var(--kc-night);
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

/* Pied de page */

footer {
  max-width: 48rem;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  border-top: 1px solid var(--kc-line);
  text-align: center;
  font-size: 0.9rem;
  line-height: 1.6;
  opacity: 0.7;
}
footer p + p { margin-top: 0.75rem; }
footer strong { color: var(--kc-cyan); }
.note { opacity: 0.75; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Petits ecrans */

@media (max-width: 480px) {
  .site-header { gap: 0.5rem; }
  .site-header, .hero, main { padding-inline: 1rem; }
  .brand { font-size: 1.1rem; }
  .tag { padding: 0.15rem 0.45rem; font-size: 0.65rem; letter-spacing: 0.06em; }
  .shop-link { padding: 0.45rem 0.8rem; font-size: 0.8rem; }
  .shop-extra {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
}