/* Delta 3 · 信号优先 */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0f1117;
  --surface:   #1a1d27;
  --border:    #2a2d3a;
  --muted:     #5a5f78;
  --text:      #dde1f0;
  --dim:       #8a8fa8;
  --accent:    #5b72ff;
  --green:     #3ecf7a;
  --orange:    #f59e42;
  --red:       #f55a5a;
  --purple:    #b07aff;
  --teal:      #2dd4bf;
  --radius:    8px;
  --font:      -apple-system, "Segoe UI", sans-serif;
}

html, body { height: 100%; background: var(--bg); color: var(--text); font-family: var(--font); font-size: 14px; line-height: 1.5; }

/* ── iOS PWA 安全区 ── */
body { padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); }

/* ── Layout ── */
#app { display: grid; grid-template-rows: auto auto 1fr; height: 100dvh; overflow: hidden; }

header {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px; border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.brand { font-size: 16px; font-weight: 700; letter-spacing: -0.3px; flex: none; }
.brand small { color: var(--muted); font-weight: 400; font-size: 11px; margin-left: 6px; }

.stats-bar { display: flex; gap: 10px; flex: 1; overflow: hidden; }
.stat { display: flex; flex-direction: column; align-items: center; gap: 1px;
        padding: 4px 10px; border-radius: var(--radius); background: var(--bg);
        cursor: pointer; transition: background .15s; white-space: nowrap; }
.stat:hover { background: var(--border); }
.stat .n  { font-size: 18px; font-weight: 700; line-height: 1; }
.stat .lbl { font-size: 10px; color: var(--dim); }
.stat.action .n { color: var(--orange); }
.stat.blocker .n { color: var(--red); }
.stat.decision .n { color: var(--green); }
.stat.question .n { color: var(--teal); }

.header-right { display: flex; gap: 8px; align-items: center; }

/* ── Toolbar ── */
#toolbar {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-bottom: 1px solid var(--border);
  background: var(--surface); flex-wrap: wrap;
}

.filter-group { display: flex; gap: 4px; }
.kind-btn, .proj-btn {
  padding: 4px 10px; border-radius: 20px; border: 1px solid var(--border);
  background: transparent; color: var(--dim); font-size: 12px; cursor: pointer;
  transition: all .15s;
}
.kind-btn:hover, .proj-btn:hover { border-color: var(--accent); color: var(--text); }
.kind-btn.active, .proj-btn.active {
  background: var(--accent); border-color: var(--accent); color: #fff;
}
.kind-btn[data-kind="action"].active  { background: var(--orange); border-color: var(--orange); }
.kind-btn[data-kind="blocker"].active { background: var(--red);    border-color: var(--red); }
.kind-btn[data-kind="decision"].active { background: var(--green); border-color: var(--green); color: #000; }
.kind-btn[data-kind="question"].active { background: var(--teal);  border-color: var(--teal); color: #000; }
.kind-btn[data-kind="principle"].active { background: var(--purple); border-color: var(--purple); }
.kind-btn[data-kind="fact"].active    { background: var(--muted);  border-color: var(--muted); }

.spacer { flex: 1; }

#searchInput {
  padding: 4px 10px; border-radius: var(--radius); border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font-size: 12px; width: 180px;
  outline: none; transition: border-color .15s;
}
#searchInput:focus { border-color: var(--accent); }
#searchInput::placeholder { color: var(--muted); }

/* ── Signal Stream ── */
#stream { overflow-y: auto; padding: 12px 16px; display: flex; flex-direction: column; gap: 8px; }

.signal-card {
  display: grid; grid-template-columns: auto 1fr auto;
  gap: 10px; align-items: start;
  padding: 10px 12px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--surface);
  transition: border-color .15s, opacity .2s;
}
.signal-card:hover { border-color: var(--muted); }
.signal-card.status-resolved  { opacity: .55; }
.signal-card.status-dismissed { opacity: .35; border-style: dashed; }
.signal-card.new { animation: fadeIn .3s ease; }

.status-tag {
  display: inline-block; margin-left: 8px;
  padding: 1px 8px; border-radius: 10px;
  font-size: 10.5px; font-weight: 500; vertical-align: middle;
}
.status-tag.tag-resolved   { background: rgba(62,207,122,.18); color: var(--green); }
.status-tag.tag-dismissed  { background: rgba(90,95,120,.25); color: var(--dim); }

.signal-evidence {
  margin-top: 6px;
  padding: 6px 10px;
  background: var(--bg);
  border-left: 2px solid var(--border);
  font-size: 12px; color: var(--dim);
  line-height: 1.5;
  border-radius: 0 4px 4px 0;
}
.icon-btn.dismiss:hover { border-color: var(--muted); color: var(--text); }
.icon-btn.audit:hover   { border-color: var(--accent); color: var(--accent); }

/* ── Tag chips ── */
.signal-tags {
  display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px;
}
.tag-chip {
  display: inline-block; padding: 2px 8px; border-radius: 10px;
  background: rgba(91,114,255,.12); color: var(--accent);
  font-size: 11px; cursor: pointer; transition: background .15s;
  border: 1px solid transparent;
}
.tag-chip:hover { background: rgba(91,114,255,.25); border-color: var(--accent); }

/* ── Digest banner ── */
#digestBanner {
  margin: 0 0 12px;
  padding: 12px 14px;
  background: linear-gradient(135deg, rgba(91,114,255,.10), rgba(176,122,255,.06));
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
}
.digest-head { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.digest-tag {
  font-size: 10px; padding: 1px 6px; border-radius: 8px;
  background: var(--border); color: var(--dim); font-weight: 400;
}
.digest-tag.fresh { background: rgba(62,207,122,.2); color: var(--green); }
.digest-summary { font-size: 13px; color: var(--text); margin: 8px 0 4px; line-height: 1.6; }
.digest-list { margin: 6px 0 4px 18px; padding: 0; font-size: 12px; color: var(--dim); }
.digest-list li { margin: 2px 0; }
.digest-foot { font-size: 11px; color: var(--muted); margin-top: 6px; }

/* ── Dedupe rows ── */
.dedupe-group {
  padding: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.dedupe-row {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 6px 0;
  cursor: pointer;
}
.dedupe-row input { margin-top: 4px; }
.dedupe-row:hover { background: rgba(91,114,255,.06); }

@keyframes fadeIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; } }

.kind-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 6px; font-size: 14px;
  flex-shrink: 0; margin-top: 1px;
}
.kind-badge.action   { background: rgba(245,158,66,.15);  color: var(--orange); }
.kind-badge.blocker  { background: rgba(245,90,90,.15);   color: var(--red); }
.kind-badge.decision { background: rgba(62,207,122,.15);  color: var(--green); }
.kind-badge.question { background: rgba(45,212,191,.15);  color: var(--teal); }
.kind-badge.principle{ background: rgba(176,122,255,.15); color: var(--purple); }
.kind-badge.fact     { background: rgba(90,95,120,.2);    color: var(--muted); }

.signal-body { min-width: 0; }
.signal-text { font-size: 13.5px; font-weight: 500; line-height: 1.4; word-break: break-word; }
.signal-meta { display: flex; gap: 8px; margin-top: 4px; font-size: 11px; color: var(--dim); flex-wrap: wrap; }
.signal-project { color: var(--accent); }
.signal-actions { display: flex; gap: 4px; flex-shrink: 0; }

.icon-btn {
  width: 26px; height: 26px; border-radius: 6px; border: 1px solid var(--border);
  background: transparent; color: var(--dim); font-size: 13px;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all .15s;
}
.icon-btn:hover { border-color: var(--muted); color: var(--text); }
.icon-btn.resolve:hover { border-color: var(--green); color: var(--green); }
.icon-btn.reopen:hover  { border-color: var(--orange); color: var(--orange); }
.icon-btn.del:hover     { border-color: var(--red); color: var(--red); }

/* ── Empty state ── */
.empty-state { text-align: center; color: var(--muted); padding: 60px 20px; }
.empty-state big { display: block; font-size: 32px; margin-bottom: 8px; }

/* ── Buttons ── */
.btn {
  padding: 6px 14px; border-radius: var(--radius); border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font-size: 13px; cursor: pointer;
  transition: all .15s; white-space: nowrap;
}
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.1); }
.btn:disabled { opacity: .5; cursor: default; }

/* ── Live dot ── */
.live-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--muted);
  flex-shrink: 0; transition: background .3s;
}
.live-dot.on { background: var(--green); box-shadow: 0 0 6px var(--green); }

/* ── Toast ── */
#toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--surface); border: 1px solid var(--border); padding: 8px 16px;
  border-radius: var(--radius); font-size: 13px; color: var(--text);
  opacity: 0; pointer-events: none; transition: all .2s; z-index: 100;
  white-space: nowrap;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Resolved toggle ── */
#resolvedToggle { font-size: 12px; color: var(--dim); cursor: pointer; }
#resolvedToggle:hover { color: var(--text); }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── Loading bar ── */
#loadingBar {
  height: 2px; background: var(--accent);
  width: 0; transition: width .3s;
  position: fixed; top: 0; left: 0; z-index: 200;
}

@media (max-width: 600px) {
  .stats-bar { gap: 6px; }
  .stat { padding: 3px 7px; }
  .stat .n { font-size: 15px; }
  #searchInput { width: 120px; }
}