/* ════════════════════════════════════════════════════════════════
   Research Base — components.css
   Primary actions · mission board · knowledge archive · command room ·
   design lab · future systems.
   ════════════════════════════════════════════════════════════════ */

/* shared card surface */
.rb-surface, .rb-action, .rb-mission, .rb-panel, .rb-future__card, .rb-archive-item, .rb-lab__panel {
    background: var(--rb-panel);
    border: 1px solid var(--rb-line);
    border-radius: var(--rb-radius);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* ── primary actions ───────────────────────────────────────────── */
.rb-actions { padding-top: clamp(2.5rem, 5vw, 4rem); }
.rb-actions__grid {
    display: grid; gap: var(--rb-gap);
    grid-template-columns: repeat(3, 1fr);
    margin-top: -5rem;            /* lift the cards into the hero's base */
    position: relative; z-index: 5;
}
.rb-action {
    display: flex; flex-direction: column; gap: 0.7rem;
    padding: 1.5rem 1.5rem 1.35rem;
    position: relative; overflow: hidden;
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.rb-action::after {
    content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
    background: radial-gradient(120% 80% at 80% -10%, var(--rb-accent-soft), transparent 60%);
    opacity: 0; transition: opacity .25s ease;
}
.rb-action:hover { transform: translateY(-5px); border-color: var(--rb-accent-line); box-shadow: var(--rb-shadow); }
.rb-action:hover::after { opacity: 1; }
.rb-action__top { display: flex; align-items: center; justify-content: space-between; }
.rb-action__icon {
    display: grid; place-items: center; width: 48px; height: 48px; border-radius: 13px;
    color: var(--rb-accent); background: var(--rb-accent-soft); border: 1px solid var(--rb-accent-line);
}
.rb-action__tag { font-family: var(--rb-display); font-size: 0.64rem; font-weight: 600; letter-spacing: 0.18em; color: var(--rb-muted); }
.rb-action__title { font-family: var(--rb-display); font-size: 1.32rem; font-weight: 600; }
.rb-action__desc { color: var(--rb-ink-dim); font-size: 0.96rem; flex: 1; }
.rb-action__cta { display: inline-flex; align-items: center; gap: 0.4rem; margin-top: 0.4rem; font-family: var(--rb-display); font-weight: 600; font-size: 0.9rem; color: var(--rb-accent); }
.rb-action:hover .rb-action__cta .rb-glyph { transform: translateX(3px); }
.rb-action__cta .rb-glyph { transition: transform .2s ease; }

/* ── mission board ─────────────────────────────────────────────── */
.rb-board__rail { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.6rem; }
.rb-filter {
    font-family: var(--rb-display); font-size: 0.82rem; font-weight: 500;
    color: var(--rb-ink-dim); padding: 0.42rem 0.95rem; border-radius: 999px;
    border: 1px solid var(--rb-line); background: rgba(255,255,255,0.02);
    transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.rb-filter:hover { color: var(--rb-ink); border-color: var(--rb-line-2); }
.rb-filter.is-active { color: #08131d; background: var(--rb-teal); border-color: var(--rb-teal); }

.rb-board__grid {
    display: grid; gap: var(--rb-gap);
    grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
}
.rb-mission {
    display: flex; flex-direction: column; gap: 0.8rem; padding: 1.3rem;
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease, opacity .25s ease;
    position: relative;
}
.rb-mission::before {
    content: ""; position: absolute; left: 1.3rem; right: 1.3rem; top: 0; height: 2px;
    background: linear-gradient(90deg, var(--rb-accent), transparent);
    opacity: 0.7;
}
.rb-mission:hover, .rb-mission:focus-within { transform: translateY(-4px); border-color: var(--rb-accent-line); box-shadow: var(--rb-shadow); }
.rb-mission.is-hidden { display: none; }
.rb-mission__head { display: flex; align-items: center; justify-content: space-between; }
.rb-mission__id { font-family: var(--rb-display); font-size: 0.74rem; letter-spacing: 0.12em; color: var(--rb-muted); }
.rb-mission__title { font-size: 1.16rem; }
.rb-mission__brief { color: var(--rb-ink-dim); font-size: 0.92rem; flex: 1; }
.rb-mission__tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.rb-mission__tags li {
    font-size: 0.7rem; letter-spacing: 0.04em; color: var(--rb-ink-dim);
    padding: 0.2rem 0.55rem; border-radius: 6px; border: 1px solid var(--rb-line);
    background: rgba(255,255,255,0.02);
}
.rb-mission__foot { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 0.9rem; padding-top: 0.85rem; border-top: 1px solid var(--rb-line); }
.rb-meter { font-family: var(--rb-display); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; color: var(--rb-accent); padding: 0.18rem 0.55rem; border: 1px solid var(--rb-accent-line); border-radius: 6px; margin-right: auto; }
.rb-mission__stat { font-size: 0.82rem; color: var(--rb-muted); }

.rb-board__empty { color: var(--rb-muted); padding: 2rem 0; text-align: center; }

/* ── knowledge archive ─────────────────────────────────────────── */
.rb-archive__grid {
    display: grid; gap: var(--rb-gap);
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
}
.rb-archive-item {
    display: grid; grid-template-areas: "class class" "cover body" "foot foot";
    grid-template-columns: auto 1fr; gap: 0.5rem 1rem; padding: 1.2rem;
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.rb-archive-item:hover { transform: translateY(-4px); border-color: var(--rb-line-2); box-shadow: var(--rb-shadow); }
.rb-archive-item__class { grid-area: class; font-family: var(--rb-display); font-size: 0.62rem; font-weight: 600; letter-spacing: 0.2em; color: var(--rb-muted); }
.rb-archive-item__cover {
    grid-area: cover; width: 56px; height: 56px; border-radius: 12px;
    display: grid; place-items: center; overflow: hidden;
    background: rgba(255,255,255,0.04); border: 1px solid var(--rb-line);
}
.rb-archive-item__cover img { width: 36px; height: 36px; object-fit: contain; }
.rb-archive-item__mono { font-family: var(--rb-display); font-weight: 700; font-size: 1.2rem; color: var(--rb-ink-dim); }
.rb-archive-item__body { grid-area: body; align-self: center; }
.rb-archive-item__title { display: block; font-family: var(--rb-display); font-size: 1.12rem; font-weight: 600; }
.rb-archive-item__sub { display: block; margin-top: 0.2rem; color: var(--rb-ink-dim); font-size: 0.86rem; line-height: 1.4; }
.rb-archive-item__foot { grid-area: foot; display: flex; align-items: center; justify-content: space-between; padding-top: 0.85rem; border-top: 1px solid var(--rb-line); }
.rb-archive-item__open { display: inline-flex; align-items: center; gap: 0.35rem; font-family: var(--rb-display); font-weight: 600; font-size: 0.86rem; color: var(--rb-teal); }
.rb-archive-item:hover .rb-archive-item__open .rb-glyph { transform: translateX(3px); }
.rb-archive-item__open .rb-glyph { transition: transform .2s ease; }

/* ── command room ──────────────────────────────────────────────── */
.rb-room__grid { display: grid; gap: var(--rb-gap); grid-template-columns: 1fr 1fr; }
.rb-panel { padding: 1.5rem; }
.rb-panel__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.1rem; }
.rb-panel__title { display: inline-flex; align-items: center; gap: 0.55rem; font-size: 1.2rem; }
.rb-panel__title .rb-glyph { color: var(--rb-teal); }
.rb-panel__note { margin-top: 1.2rem; font-size: 0.78rem; color: var(--rb-muted); border-top: 1px solid var(--rb-line); padding-top: 0.9rem; }

/* leaderboard */
.rb-leaderboard { display: flex; flex-direction: column; }
.rb-leaderboard__row { display: flex; align-items: center; gap: 0.9rem; padding: 0.7rem 0; border-bottom: 1px solid var(--rb-line); }
.rb-leaderboard__row:last-child { border-bottom: 0; }
.rb-leaderboard__pos { font-family: var(--rb-display); font-weight: 700; font-size: 0.9rem; color: var(--rb-muted); width: 1.4rem; text-align: center; }
.rb-leaderboard__row:first-child .rb-leaderboard__pos { color: var(--rb-amber); }
.rb-leaderboard__who { flex: 1; display: flex; flex-direction: column; line-height: 1.25; }
.rb-leaderboard__name { font-family: var(--rb-display); font-weight: 600; }
.rb-leaderboard__meta { font-size: 0.76rem; color: var(--rb-muted); }
.rb-leaderboard__pts { font-family: var(--rb-display); font-weight: 600; color: var(--rb-teal); }

/* feed */
.rb-feed { display: flex; flex-direction: column; }
.rb-feed__row { display: flex; align-items: flex-start; gap: 0.8rem; padding: 0.7rem 0; border-bottom: 1px solid var(--rb-line); }
.rb-feed__row:last-child { border-bottom: 0; }
.rb-feed__glyph { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px; color: var(--rb-violet); background: rgba(156,140,242,0.12); border: 1px solid rgba(156,140,242,0.3); flex: none; }
.rb-feed__text { flex: 1; font-size: 0.92rem; color: var(--rb-ink-dim); }
.rb-feed__when { font-size: 0.74rem; color: var(--rb-muted); white-space: nowrap; }

/* ── design lab ────────────────────────────────────────────────── */
.rb-lab__panel { display: grid; grid-template-columns: 1.3fr 0.9fr; gap: clamp(1.5rem, 4vw, 3rem); padding: clamp(1.6rem, 3.5vw, 2.6rem); align-items: center; }
.rb-lab__steps { display: flex; flex-direction: column; gap: 1rem; margin: 1.6rem 0; }
.rb-lab__steps li { display: flex; gap: 1rem; }
.rb-lab__steps li > span:last-child { display: flex; flex-direction: column; }
.rb-lab__steps strong { font-family: var(--rb-display); }
.rb-lab__steps span span { color: var(--rb-ink-dim); font-size: 0.9rem; }
.rb-lab__num { font-family: var(--rb-display); font-weight: 700; color: var(--rb-amber); border: 1px solid rgba(242,178,102,0.4); border-radius: 9px; width: 38px; height: 38px; display: grid; place-items: center; flex: none; }

.rb-lab__schematic { display: grid; place-items: center; }
.rb-blueprint { position: relative; width: 220px; height: 220px; color: var(--rb-teal); }
.rb-blueprint__wires { position: absolute; inset: 0; opacity: 0.5; color: var(--rb-teal); }
.rb-blueprint__wires path, .rb-blueprint__wires circle { animation: rb-dash 8s linear infinite; }
.rb-blueprint__node { position: absolute; display: grid; place-items: center; width: 56px; height: 56px; border-radius: 14px; background: var(--rb-panel-2); border: 1px solid var(--rb-line-2); }
.rb-blueprint__node--a { top: 6%; left: 6%; color: var(--rb-violet); }
.rb-blueprint__node--b { top: 38%; left: 38%; color: var(--rb-amber); transform: scale(1.15); }
.rb-blueprint__node--c { bottom: 6%; right: 6%; color: var(--rb-teal); }

/* ── future systems ────────────────────────────────────────────── */
.rb-future__grid { display: grid; gap: var(--rb-gap); grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.rb-future__card { padding: 1.5rem; display: flex; flex-direction: column; gap: 0.6rem; text-align: left; transition: transform .2s ease, border-color .2s ease; }
.rb-future__card:hover { transform: translateY(-4px); border-color: var(--rb-line-2); }
.rb-future__icon { display: grid; place-items: center; width: 50px; height: 50px; border-radius: 13px; color: var(--rb-teal); background: rgba(88,210,193,0.1); border: 1px solid rgba(88,210,193,0.28); margin-bottom: 0.3rem; }
.rb-future__card:nth-child(2) .rb-future__icon { color: var(--rb-amber); background: rgba(242,178,102,0.1); border-color: rgba(242,178,102,0.28); }
.rb-future__card:nth-child(3) .rb-future__icon { color: var(--rb-violet); background: rgba(156,140,242,0.12); border-color: rgba(156,140,242,0.3); }
.rb-future__title { font-size: 1.16rem; }
.rb-future__desc { color: var(--rb-ink-dim); font-size: 0.9rem; flex: 1; }
.rb-future__status { display: inline-flex; align-items: center; gap: 0.4rem; font-family: var(--rb-display); font-size: 0.74rem; font-weight: 600; letter-spacing: 0.06em; color: var(--rb-muted); margin-top: 0.4rem; }

@keyframes rb-dash { to { stroke-dashoffset: -60; } }