/* =========================================================
   Chakradhari — Card system
   channel-card, cap, focus-card, t-card, pub-card share a common
   visual grammar (line border, field gradient, hover lift) plus
   chips/tags/filter pills. [data-tilt] hosts get the pointer-
   reactive tilt from js/core/pointer-cards.js.
   ========================================================= */
@layer components {

  [data-tilt] {
    transform-style: preserve-3d;
    will-change: transform;
    transition: transform .5s var(--ease-spring), border-color .35s, box-shadow .35s;
  }
  [data-tilt].is-tilting { transition: transform .08s linear; }

  /* Border draw-in: the same top-edge sweep .cap already does on hover
     (below), generalised to every other card type and triggered once as
     the card scrolls into view rather than only on hover — so entrances
     read as "assembling", not just fading up. */
  .channel-card::after, .pub-card::after, .focus-card::after, .t-card::after {
    content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 0;
    background: linear-gradient(90deg, var(--blue), var(--blue-bright));
    transition: width .7s var(--ease) .35s;
    pointer-events: none;
  }
  [data-reveal-stagger].in > .channel-card::after,
  [data-reveal-stagger].in > .pub-card::after,
  [data-reveal-stagger].in > .focus-card::after,
  [data-reveal-stagger].in > .t-card::after,
  .channel-card:hover::after, .pub-card:hover::after, .focus-card:hover::after, .t-card:hover::after {
    width: 100%;
  }

  /* ---------- Chips, tags, filter toolbar ---------- */
  .lab-toolbar { display: flex; flex-wrap: wrap; gap: 0.55rem; margin-bottom: 1.2rem; }
  .lab-toolbar span,
  .lab-toolbar button,
  .resource-links span {
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--text-soft);
    font-family: var(--mono);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    padding: 0.35rem 0.62rem;
    text-transform: uppercase;
  }
  .lab-toolbar button { transition: color .2s, border-color .2s, background .2s; }
  .lab-toolbar button:hover { color: var(--white); border-color: var(--line-blue); }
  .lab-toolbar button.is-active { color: var(--white); background: rgba(46,155,255,0.16); border-color: var(--line-blue); }
  .cap.is-hidden, .pub-card.is-hidden { display: none; }

  .status, .channel-type {
    font-family: var(--mono);
    font-size: 0.66rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }
  .status {
    color: var(--white);
    background: rgba(46,155,255,0.16);
    border: 1px solid var(--line-blue);
    border-radius: 999px;
    padding: 0.25rem 0.5rem;
  }
  .channel-card:not(.live) .status { color: var(--text-soft); background: rgba(255,255,255,0.04); border-color: var(--line); }
  .channel-type { color: var(--text-faint); max-width: 16rem; }
  .content-badge {
    font-family: var(--mono);
    font-size: 0.66rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--blue-bright);
    border: 1px solid var(--line-blue);
    border-radius: 999px;
    padding: 0.25rem 0.55rem;
  }
  .resource-links { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }
  .resource-links span { border-radius: 6px; padding: 0.24rem 0.5rem; letter-spacing: 0.04em; text-transform: none; color: var(--text); background: rgba(255,255,255,0.035); }
  @media (prefers-color-scheme: light) { :root:not([data-theme="dark"]) .resource-links span { background: rgba(10,14,20,0.045); } }
  :root[data-theme="light"] .resource-links span { background: rgba(10,14,20,0.045); }

  /* ---------- Meta-link row (repo / notebook / video / paper slots) ---------- */
  .meta-links { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1rem; }
  .meta-links a {
    display: inline-flex; align-items: center; gap: 0.4rem;
    font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase;
    color: var(--text-soft); border: 1px solid var(--line); border-radius: 999px;
    padding: 0.3rem 0.6rem 0.3rem 0.5rem;
    transition: color .2s, border-color .2s;
  }
  .meta-links a:hover { color: var(--white); border-color: var(--line-blue); }
  .meta-links a svg { width: 13px; height: 13px; }

  /* ---------- Channel cards ---------- */
  .channel-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; margin-bottom: 1.8rem; }
  .channel-card {
    position: relative; overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: clamp(1.3rem, 2.3vw, 1.7rem);
    background: linear-gradient(180deg, var(--field) 0%, var(--bg-2) 100%);
  }
  .channel-card.live { border-color: var(--line-blue); box-shadow: inset 0 1px 0 rgba(90,180,255,0.18); }
  .channel-top { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.8rem; margin-bottom: 1rem; }
  .channel-card h3 { font-size: 1.3rem; margin-bottom: 0.65rem; }
  .channel-card p { color: var(--text-soft); font-size: 0.95rem; line-height: 1.55; }
  .channel-path { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }
  .channel-path span {
    font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--text); background: rgba(255,255,255,0.04); border: 1px solid var(--line); border-radius: 6px; padding: 0.24rem 0.5rem;
  }
  .channel-card a:not(.meta-links a) {
    display: inline-flex; margin-top: 1rem; color: var(--blue-bright);
    font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase;
    border-bottom: 1px solid transparent; transition: border-color .25s, color .25s;
  }
  .channel-card a:not(.meta-links a):hover { color: var(--white); border-color: var(--blue); }

  /* ---------- Open Lab / capability cards ---------- */
  .cap-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
  .lab-grid { grid-template-columns: repeat(3, 1fr); }
  .toolbox-panel {
    display: grid; grid-template-columns: 0.75fr 1.25fr; gap: clamp(1.5rem, 4vw, 3rem);
    align-items: start; margin-bottom: 1.8rem; padding: clamp(1.5rem, 3vw, 2.2rem);
    border: 1px solid var(--line); border-radius: var(--radius-lg);
    background: linear-gradient(90deg, rgba(46,155,255,0.10), transparent 48%), var(--bg-2);
  }
  .toolbox-panel h3 { font-size: clamp(1.45rem, 2.8vw, 2rem); margin-top: 0.9rem; }
  .toolbox-panel p { color: var(--text-soft); font-size: 1rem; line-height: 1.65; }
  .cap {
    border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
    padding: clamp(1.6rem, 2.4vw, 2.1rem); min-height: 260px;
    display: flex; flex-direction: column; position: relative;
    background: var(--bg); transition: background .35s var(--ease);
    overflow: hidden;
  }
  .cap:hover { background: var(--field); }
  .cap .cap-no { font-family: var(--mono); font-size: 0.72rem; color: var(--text-faint); letter-spacing: 0.1em; }
  .cap :is(h3, h4) { font-size: 1.28rem; margin: 1.1rem 0 0.7rem; letter-spacing: -0.02em; color: var(--white); }
  .cap p { font-size: 0.95rem; color: var(--text-soft); line-height: 1.55; }
  .cap .cap-mark { margin-top: auto; width: 34px; height: 34px; color: var(--blue); opacity: 0; transform: translateY(6px); transition: .4s var(--ease); }
  .cap:hover .cap-mark { opacity: .9; transform: translateY(0); }
  .cap::after {
    content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 0;
    background: linear-gradient(90deg, var(--blue), var(--blue-bright)); transition: width .45s var(--ease);
  }
  .cap:hover::after { width: 100%; }
  /* mesh overlay: a faint computational grid that resolves in on hover, echoing
     "cards slightly reveal underlying computational structure" */
  .cap .cap-mesh {
    position: absolute; inset: 0; z-index: 0; pointer-events: none;
    opacity: 0; transition: opacity .5s var(--ease);
    background-image:
      linear-gradient(var(--line-blue) 1px, transparent 1px),
      linear-gradient(90deg, var(--line-blue) 1px, transparent 1px);
    background-size: 22px 22px;
    mask-image: radial-gradient(140px 140px at var(--mx,50%) var(--my,50%), #000 0%, transparent 75%);
  }
  .cap:hover .cap-mesh { opacity: 1; }
  .cap > :not(.cap-mesh) { position: relative; z-index: 1; }

  /* ---------- Publication / roadmap cards ---------- */
  .pub-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.1rem; margin-bottom: 0.4rem; }
  .pub-card {
    position: relative; overflow: hidden;
    border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(1.4rem, 2.4vw, 1.9rem);
    background: linear-gradient(180deg, var(--field) 0%, var(--bg-2) 100%);
    transition: border-color .35s, transform .35s var(--ease);
  }
  .pub-card:hover { border-color: var(--line-blue); transform: translateY(-3px); }
  .pub-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.9rem; }
  .pub-year { font-family: var(--mono); font-size: 0.72rem; color: var(--text-faint); letter-spacing: 0.08em; }
  .pub-title { font-family: var(--serif); font-size: 1.18rem; font-weight: 460; color: var(--white); letter-spacing: -0.01em; margin-bottom: 0.5rem; }
  .pub-authors { font-size: 0.88rem; color: var(--text-soft); }
  .pub-authors span { color: var(--text-faint); }
  .pub-summary { font-size: 0.92rem; color: var(--text-soft); line-height: 1.55; margin-top: 0.7rem; }

  /* ---------- Focus / domain cards ---------- */
  .focus-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.1rem; }
  .focus-card {
    position: relative; border-radius: var(--radius-lg); padding: clamp(1.8rem, 3vw, 2.6rem);
    background: linear-gradient(180deg, var(--field) 0%, var(--bg-2) 100%);
    border: 1px solid var(--line); overflow: hidden;
    transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
  }
  .focus-card:hover { box-shadow: var(--card-shadow); border-color: var(--line-blue); }
  .focus-card .tag { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--blue); }
  .focus-card h3 { font-size: 1.55rem; margin: 0.9rem 0 0.7rem; color: var(--white); }
  .focus-card p { color: var(--text-soft); font-size: 0.98rem; }
  .focus-card .domain-viz { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
  .focus-card > :not(.domain-viz) { position: relative; z-index: 1; }

  /* ---------- Triad / work-grid (t-card) ---------- */
  .triad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
  .t-card {
    position: relative; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg);
    padding: clamp(1.5rem, 2.6vw, 2.1rem);
    background: linear-gradient(180deg, var(--field) 0%, var(--bg-2) 100%);
    transition: border-color .35s, transform .35s var(--ease);
  }
  .t-card:hover { border-color: var(--line-blue); transform: translateY(-4px); }
  .t-card .t-no { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; color: var(--blue); }
  .t-card :is(h3, h4) { font-size: 1.25rem; margin: 1rem 0 0.6rem; color: var(--white); }
  .t-card p { color: var(--text-soft); font-size: 0.95rem; line-height: 1.55; }
  .card-link {
    display: inline-flex; color: var(--blue-bright); font-family: var(--mono); font-size: 0.78rem;
    letter-spacing: 0.08em; text-transform: uppercase; border-bottom: 1px solid transparent;
    transition: border-color .25s, color .25s;
  }
  .card-link:hover { color: var(--white); border-color: var(--blue); }
  .t-card .card-link { margin-top: 1rem; }

  .work-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1.1rem; }
  .work-principles { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; margin-top: 1.2rem; border: 1px solid var(--line); background: var(--line); }
  .work-principles span {
    display: grid; place-items: center; min-height: 72px; padding: 0.9rem; text-align: center;
    color: var(--text); background: var(--night); font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
    transition: background .5s var(--ease), color .5s var(--ease);
  }
  /* Sequential scan across the five principles — js/viz/sequential-highlight.js */
  .work-principles span.is-active { background: rgba(46,155,255,0.14); color: var(--white); }

  @media (max-width: 960px) {
    .cap-grid { grid-template-columns: repeat(2, 1fr); }
    .focus-grid, .triad, .work-grid, .work-principles, .pub-list { grid-template-columns: 1fr; }
    .toolbox-panel { grid-template-columns: 1fr; }
  }
  @media (max-width: 480px) {
    .cap-grid { grid-template-columns: 1fr; }
  }
}