/* ============================================================
   09 · The Lab — practice project cards
   ============================================================ */

.lab { background: linear-gradient(180deg, var(--ink-950), var(--ink-900) 30%, var(--ink-950)); }
.lab-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.lab-card {
  padding: 26px; border-radius: var(--radius-lg);
  border: 1px solid var(--line); background: var(--card);
  display: flex; flex-direction: column; position: relative; overflow: hidden;
  transition: transform .35s var(--ease), border-color .35s, box-shadow .35s;
  color: inherit; text-decoration: none;
}
.lab-card:focus-visible {
  outline: 2px solid var(--cyan-400); outline-offset: 2px;
  transform: translateY(-6px);
}
.lab-card .lab-open {
  margin-top: 14px;
  font-family: var(--font-mono); font-size: .62rem; letter-spacing: .18em; text-transform: uppercase;
  color: var(--cyan-300); display: inline-flex; align-items: center; gap: 6px;
}
.lab-card .lab-open svg { width: 13px; height: 13px; transition: transform .3s var(--ease); }
.lab-card:hover .lab-open svg { transform: translate(3px, -3px); }
.lab-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad); opacity: 0; transition: opacity .35s; z-index: 3;
}
.lab-card:hover { transform: translateY(-6px); border-color: rgba(34, 211, 238, .4); box-shadow: 0 24px 50px -20px rgba(2, 6, 16, .65); }
.lab-card:hover::before { opacity: 1; }

/* thumbnail (royalty-free, from Pexels) */
.lab-thumb {
  position: relative; aspect-ratio: 16/9; border-radius: var(--radius-sm); overflow: hidden;
  margin: -26px -26px 18px; border-bottom: 1px solid var(--line);
}
.lab-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.lab-card:hover .lab-thumb img { transform: scale(1.07); }
.lab-thumb::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(5, 8, 15, .85));
}
.lab-thumb .lab-idx {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  font-family: var(--font-mono); font-size: .64rem; letter-spacing: .2em; color: #fff;
  background: rgba(8, 13, 24, .75); padding: 5px 10px; border-radius: 8px; backdrop-filter: blur(6px);
}

.lab-card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.lab-idx { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .2em; color: var(--blue-300); }
.lab-status {
  font-family: var(--font-mono); font-size: .6rem; letter-spacing: .1em; text-transform: uppercase;
  color: #6ee7b7; background: rgba(16, 185, 129, .14); padding: 5px 11px; border-radius: 999px;
  margin-left: auto;
}
.lab-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.lab-card p { color: var(--slate-400); font-size: .9rem; margin-bottom: 18px; flex: 1; }
.lab-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.lab-tags li {
  font-family: var(--font-mono); font-size: .62rem; letter-spacing: .06em;
  color: var(--slate-300); padding: 5px 11px; border-radius: 999px;
  border: 1px solid var(--line-strong);
}
.lab-bar { height: 5px; border-radius: 4px; background: rgba(148, 180, 235, .12); overflow: hidden; }
.lab-bar span {
  display: block; height: 100%; width: var(--w, 0%); border-radius: 4px;
  background: var(--grad); animation: grow-w 1.2s var(--ease) both;
}
@keyframes grow-w { from { width: 0; } }

.lab-card-cta { background: linear-gradient(160deg, rgba(47, 102, 255, .16), rgba(34, 211, 238, .14)); border-color: rgba(34, 211, 238, .35); }
.lab-card-cta h3 { font-size: 1.3rem; }
.lab-card-cta p { font-size: .95rem; }
.lab-card-cta .btn { align-self: flex-start; }