:root {
  --card-width: 220px;
  --bg-image: url("texture.jpg");
  --bg-repeat: repeat;
  --bg-size: cover;
  --bg-position: center center;

  --logo-max-width: clamp(160px, 40vw, 300px);
  --page-padding: max(16px, env(safe-area-inset-left));
}

html, body { height: 100%; padding: 0; }

body {
  margin: 0;
  -webkit-font-smoothing: antialiased;
  background-color: #1f2b24;
  background-image: var(--bg-image);
  background-repeat: var(--bg-repeat);
  background-size: var(--bg-size);
  background-position: var(--bg-position);
}

.viewport-center {
  min-height: 100svh;
  min-height: 100dvh;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.logo {
  max-width: var(--logo-max-width);
  width: 100%;
  height: auto;
  display: block;
  image-rendering: auto;
  filter: drop-shadow(0 1px 0 rgba(0,0,0,0.25));
}

@media (prefers-reduced-motion: no-preference) {
  .logo { opacity: 0; transform: translateY(4px); animation: fadeIn 500ms ease-out both; }
  @keyframes fadeIn { to { opacity: 1; transform: none; } }
}

img { -webkit-touch-callout: default; }

.section { padding: clamp(24px, 5vw, 48px) var(--page-padding); box-sizing: border-box; }
.section h2 {
  margin: 0 0 16px 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  font-size: clamp(20px, 3.5vw, 28px);
  font-weight: 600;
  color: #f2f5f3;
  text-shadow: 0 1px 0 rgba(0,0,0,0.35);
}

.video-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: clamp(12px, 3vw, 20px); }
.video-card { background: rgba(0,0,0,0.35); border: 1px solid rgba(255,255,255,0.08); border-radius: 10px; overflow: hidden; backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px); }
.video-link { position: relative; display: block; overflow: hidden; border-radius: 10px; }
.pin-card a::after { content:'\25B6'; position:absolute; inset:auto auto 8px 8px; width:36px; height:36px; display:grid; place-items:center; font-size:18px; color:#fff; background: rgba(0,0,0,0.55); border-radius: 999px; box-shadow: 0 2px 6px rgba(0,0,0,.35); }
.video-link img { display: block; width: 100%; height: auto; transition: transform 0.3s ease, filter 0.3s ease; }
.video-link:hover img { transform: scale(1.05); filter: brightness(1.1); }
.video-link::after { content: '▶'; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: 48px; color: white; text-shadow: 0 0 8px rgba(0,0,0,0.6); pointer-events: none; }
.video-link::before { content: ""; position: absolute; inset: auto 0 0 0; height: 40%; background: linear-gradient(to top, rgba(0,0,0,.45), transparent); pointer-events: none; }
@media (prefers-reduced-motion: reduce) { .video-link img { transition: none !important; } }
.video-thumb { aspect-ratio: 16 / 9; width: 100%; display: block; border: 0; }
.video-meta { padding: 10px 12px; color: #e9ecea; font: 500 14px/1.3 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial; }
.video-meta .title { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; font-family: ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-weight: 700; }
.video-meta .date { margin-top: 4px; opacity: 0.85; font: 600 12px/1.2 ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; color: #cfd4d2; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); clip-path: inset(50%); white-space: nowrap; border: 0; }

.container { max-width: 1200px; margin: 0 auto; }

/* Display strategy: desktop shows board, mobile shows grid */
#video-grid { display: none; }
.mobile-only { display: none; }
.desktop-only { display: block; }
@media (max-width: 768px) {
  #board { display: none; }
  #video-grid { display: grid; }
  .mobile-only { display: block; }
  .desktop-only { display: none; }
}

/* Subtle reset button overlay for the board */
.board-reset { 
  position: absolute; 
  bottom: 18px; right: 18px; 
  appearance: none; 
  border: 1px solid rgba(0,0,0,0.7);
  background: none; 
  color: #222; 
  font: 600 12px/1 system-ui, -apple-system, Segoe UI, Roboto; 
  border-radius: 8px; 
  padding: 6px 10px; 
  cursor: pointer; 
  box-shadow: inset 0px 1px 1px rgba(255,255,255,0.5), 0 1px 6px rgba(0,0,0,0.25);
}
.board-reset:hover { filter: brightness(1.02); }

.bulletin-board {
  position: relative;
  min-height: clamp(420px, 60vw, 760px);
  padding: clamp(12px, 2vw, 20px);
  border-radius: 14px;
  background:url('cork-texture.jpg');
  background-size: 200px;
  background-repeat:repeat;
  box-shadow: inset 0 0 0 10px #100f0e, 0 18px 28px rgba(0,0,0,0.45);
  border: none;
  overflow: hidden;
}
.pin-item { --rotate: 0deg; position: absolute; transform: rotate(var(--rotate)); user-select: none; touch-action: none; transition: box-shadow .2s ease; will-change: transform, left, top; cursor: grab; z-index: 0; }
.pin-item.dragging { cursor: grabbing; z-index: 10000; box-shadow: 0 24px 40px rgba(0,0,0,0.45); }
.pin-item::before { content: ""; position: absolute; top: -10px; left: 50%; transform: translateX(-50%); width: 16px; height: 16px; border-radius: 50%; background: radial-gradient(circle at 30% 30%, #ff7b7b, #b61818 70%); box-shadow: 0 3px 0 rgba(0,0,0,0.25); z-index: 3; pointer-events: none; }
.pin-card { background:#fff; border-radius:6px; padding:8px 8px 14px; width:var(--card-width); box-shadow:0 16px 26px rgba(0,0,0,0.35); border:1px solid rgba(0,0,0,0.06); z-index:1; transition: transform .15s ease, box-shadow .15s ease; }
.pin-card.is-hero { box-shadow:0 22px 36px rgba(0,0,0,0.45); z-index: 2; }
.pin-card.is-hero:hover { transform: translateY(-2px) rotate(var(--rotate)); }
.pin-card:hover { box-shadow:0 22px 36px rgba(0,0,0,0.45); transform: translateY(-2px) rotate(var(--rotate)); }
.pin-card .thumb-wrap { position: relative; }
.pin-card .thumb { display:block; width:100%; aspect-ratio:16/9; object-fit:cover; border-radius:4px; }
.pin-card .caption { margin-top:8px; font: 700 12px/1.35 ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; color:#333; }
.pin-card .caption .title { font-weight: 700; }
.pin-card .caption .date { margin-top: 3px; color:#666; font-weight: 600; font-size: 11px; line-height: 1.2; opacity: .9; }
.pin-card .play-btn { position:absolute; top:50%; left:50%; transform: translate(-50%, -50%); width:60px; height:60px; border:0; border-radius:999px; display:grid; place-items:center; color:#fff; background: rgba(0,0,0,0.55); box-shadow: 0 6px 16px rgba(0,0,0,0.35); cursor: pointer; font-size: 30px; }
.pin-card .play-btn:hover { filter: brightness(1.1); }
.pin-card .play-btn:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.pin-handle { position:absolute; left:8px; right:8px; top:-6px; height:22px; border-radius:6px; cursor: grab; background: linear-gradient(180deg, rgba(255,255,255,0.35), rgba(255,255,255,0.1)); box-shadow: 0 2px 4px rgba(0,0,0,0.08); }
.pin-note { width: var(--card-width); min-height: 180px; padding: 10px 12px; border-radius: 4px; box-shadow: 0 16px 26px rgba(0,0,0,0.35); border: 1px solid rgba(0,0,0,0.08); font: 600 20px/1.35 ui-rounded, system-ui, -apple-system, Segoe UI, Roboto; color:#222; z-index:5; transition: transform .15s ease, box-shadow .15s ease; text-align: center;}
.pin-note:hover { box-shadow: 0 22px 36px rgba(0,0,0,0.45); transform: translateY(-2px) rotate(var(--rotate)); }
.pin-note[data-color="yellow"] { background:#fff3a3; }
.pin-note[data-color="green"]  { background:#c6f6c6; }
.pin-note[data-color="blue"]   { background:#cfe9ff; }
.pin-note[data-color="pink"]   { background:#ffd6e7; }
.pin-note[contenteditable="true"]:focus { outline:2px dashed rgba(0,0,0,0.3); outline-offset:2px; }