/* psychkey-ai — pink kawaii minimal app theme */
:root {
  --bg:        #fff6f9;     /* page background, soft pink-cream */
  --bg-soft:   #ffffff;     /* card */
  --bg-tint:   #fff0f5;     /* hover / subtle */
  --bg-elev:   #fee5ed;     /* deeper tint, badges */
  --border:    #ffd6e3;     /* light pink border */
  --border-strong: #ffb6cf;
  --text:      #3d2c3d;     /* near-black plum */
  --text-dim:  #8a6f80;
  --text-faint:#b89fa9;
  --accent:    #ff6b9d;     /* primary pink */
  --accent-soft: #ffd6e3;
  --accent-strong: #e84e89;
  --accent-deep: #b73e6e;
  --success:   #7ec797;
  --danger:    #ff7a8a;
  --warn:      #ffb866;
  --mark:      #fff39e;
  --mark-fg:   #5a4a00;
  --shadow:    0 4px 20px rgba(255,107,157,0.08);
  --shadow-lg: 0 8px 32px rgba(255,107,157,0.15);
  --radius:    16px;
  --radius-sm: 10px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin:0; padding:0;
  background:var(--bg);
  color:var(--text);
  font:14px/1.6 -apple-system, BlinkMacSystemFont, 'Pretendard', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  letter-spacing:-0.01em;
}
::selection { background:var(--accent-soft); color:var(--accent-deep); }

button { font-family:inherit; cursor:pointer; border:none; transition:all .15s; }
button.ghost {
  background:transparent; color:var(--text-dim); padding:8px 14px;
  border-radius:var(--radius-sm); border:1px solid var(--border); font-size:13px;
}
button.ghost:hover { background:var(--bg-tint); color:var(--accent-deep); border-color:var(--border-strong); }
button.primary {
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-strong) 100%);
  color:#fff; padding:11px 22px; border-radius:var(--radius-sm);
  font-weight:600; font-size:14px;
  box-shadow:0 4px 14px rgba(255,107,157,0.35);
}
button.primary:hover { transform:translateY(-1px); box-shadow:0 6px 20px rgba(255,107,157,0.45); }
button.primary:disabled { background:var(--border); color:var(--text-faint); cursor:not-allowed; box-shadow:none; transform:none; }
input, textarea {
  font-family:inherit;
  background:var(--bg-soft); color:var(--text);
  border:1.5px solid var(--border); border-radius:var(--radius-sm);
  outline:none; transition:border-color .15s, box-shadow .15s;
}
input:focus, textarea:focus { border-color:var(--accent); box-shadow:0 0 0 4px var(--accent-soft); }

/* ---- Top bar ---- */
.top {
  display:flex; align-items:center; gap:14px;
  padding:14px 24px; background:var(--bg-soft);
  border-bottom:1px solid var(--border);
  position:sticky; top:0; z-index:20;
  box-shadow:var(--shadow);
}
.brand { display:flex; align-items:center; gap:10px; font-weight:700; font-size:18px; color:var(--accent-deep); letter-spacing:-0.02em; }
.brand .logo {
  width:36px; height:36px; display:inline-flex; align-items:center; justify-content:center;
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-strong) 100%);
  border-radius:50%; color:#fff; font-size:18px;
  box-shadow:0 4px 12px rgba(255,107,157,0.35);
}
.brand .accent { color:var(--accent); margin:0 1px; }
.top-stats { color:var(--text-dim); font-size:12px; flex:1; padding-left:8px; }
.top-stats strong { color:var(--accent-deep); font-weight:700; }
.top-actions { display:flex; gap:6px; }
.top-mobile-actions { display:none; gap:6px; }
.icon-btn {
  width:36px; height:36px; border-radius:50%;
  background:var(--bg-tint); border:1px solid var(--border);
  color:var(--accent-deep); font-size:16px; line-height:1;
  display:inline-flex; align-items:center; justify-content:center;
  transition:all .15s;
}
.icon-btn:hover, .icon-btn:active { background:var(--accent); color:#fff; border-color:var(--accent); }

/* ---- App layout ---- */
.app { display:grid; grid-template-columns: 240px minmax(0,1fr); min-height:calc(100vh - 65px); }

.sidebar {
  background:var(--bg-soft); border-right:1px solid var(--border);
  padding:18px 14px; display:flex; flex-direction:column; gap:14px;
  position:sticky; top:65px; align-self:start; height:calc(100vh - 65px);
  overflow-y:auto;
}
.sidebar .nav-title { font-size:11px; font-weight:700; text-transform:uppercase; color:var(--text-faint); padding:0 10px; letter-spacing:0.06em; }
.nav-btn {
  display:flex; align-items:center; gap:10px;
  padding:10px 12px; border-radius:var(--radius-sm);
  background:transparent; color:var(--text); font-size:13px; font-weight:500;
  border:1px solid transparent; text-align:left; cursor:pointer;
}
.nav-btn:hover { background:var(--bg-tint); color:var(--accent-deep); }
.nav-btn .ic { font-size:15px; opacity:0.85; }
.nav-btn.primary {
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-strong) 100%);
  color:#fff; box-shadow:0 4px 14px rgba(255,107,157,0.3); justify-content:center;
}
.nav-btn.primary:hover { color:#fff; transform:translateY(-1px); }

.history-list { display:flex; flex-direction:column; gap:4px; max-height:50vh; overflow-y:auto; padding:0 2px; }
.history-pill {
  font-size:12px; padding:8px 10px; border-radius:var(--radius-sm);
  background:transparent; color:var(--text-dim); cursor:pointer;
  border:1px solid transparent; text-align:left;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.history-pill:hover { background:var(--bg-tint); color:var(--text); }

.main { padding:28px; max-width:1100px; margin:0 auto; width:100%; display:flex; flex-direction:column; gap:18px; }

/* ---- Composer ---- */
.composer {
  background:var(--bg-soft); border:1px solid var(--border);
  border-radius:var(--radius); padding:24px;
  box-shadow:var(--shadow);
  position:relative; overflow:hidden;
}
.composer::before {
  content:""; position:absolute; top:-30px; right:-30px;
  width:120px; height:120px; background:var(--accent-soft); border-radius:50%; opacity:0.55; z-index:0;
}
.composer-head { position:relative; z-index:1; margin-bottom:14px; }
.composer-title { font-size:20px; font-weight:700; color:var(--accent-deep); display:flex; align-items:center; gap:8px; }
.composer-sub { color:var(--text-dim); font-size:12.5px; margin-top:4px; }

#taskInput {
  width:100%; padding:14px 16px; font:14.5px/1.6 inherit;
  resize:vertical; min-height:96px;
  position:relative; z-index:1;
}
.composer-files { display:flex; gap:6px; flex-wrap:wrap; margin-top:10px; position:relative; z-index:1; }
.composer-files .chip {
  background:var(--bg-elev); border:1px solid var(--border);
  border-radius:20px; padding:5px 10px 5px 12px; font-size:12px; color:var(--accent-deep);
  display:flex; align-items:center; gap:6px;
}
.composer-files .chip button { background:transparent; color:var(--text-faint); padding:0 2px; font-size:14px; line-height:1; }
.composer-files .chip button:hover { color:var(--danger); }

.composer-row { display:flex; align-items:center; gap:12px; margin-top:14px; position:relative; z-index:1; }
.upload-btn {
  padding:8px 14px; background:var(--bg-tint); border:1px solid var(--border); border-radius:var(--radius-sm);
  color:var(--text-dim); cursor:pointer; font-size:13px; transition:all .15s;
}
.upload-btn:hover { background:var(--accent-soft); color:var(--accent-deep); }
.composer-hint { flex:1; color:var(--text-faint); font-size:12px; }

/* ---- Progress ---- */
.progress-strip {
  background:var(--bg-soft); border:1px solid var(--border);
  border-radius:var(--radius); padding:16px 20px; box-shadow:var(--shadow);
}
.progress-rows { display:flex; gap:6px; flex-wrap:wrap; margin-bottom:10px; }
.phase {
  display:flex; align-items:center; gap:6px; padding:5px 11px; border-radius:18px;
  background:var(--bg-tint); border:1px solid var(--border);
  font-size:11.5px; color:var(--text-faint); transition:all .25s;
}
.phase .dot { width:7px; height:7px; border-radius:50%; background:var(--border-strong); }
.phase.done { color:var(--success); border-color:rgba(126,199,151,0.35); background:rgba(126,199,151,0.08); }
.phase.done .dot { background:var(--success); }
.phase.active {
  color:#fff; border-color:var(--accent); background:var(--accent);
  box-shadow:0 0 0 4px var(--accent-soft);
}
.phase.active .dot { background:#fff; animation:pulse 1.2s infinite; }
@keyframes pulse { 0%,100% { opacity:1 } 50% { opacity:0.5 } }
.progress-bar { height:6px; background:var(--bg-elev); border-radius:3px; overflow:hidden; margin-bottom:8px; }
.progress-fill { height:100%; background:linear-gradient(90deg,var(--accent) 0%,var(--accent-strong) 100%); width:0%; transition:width .5s; border-radius:3px; }
.progress-meta { color:var(--text-dim); font-size:11.5px; }

/* ---- Results ---- */
.results { display:grid; grid-template-columns: minmax(0,1fr) 320px; gap:18px; }
.results > * { min-width: 0; }
@media (max-width: 1024px) { .results { grid-template-columns: minmax(0,1fr); } }

.answer-pane {
  background:var(--bg-soft); border:1px solid var(--border);
  border-radius:var(--radius); padding:24px; min-height:300px;
  box-shadow:var(--shadow);
}
.answer-head { display:flex; align-items:center; justify-content:space-between; margin-bottom:14px; }
.answer-head h2 { margin:0; font-size:17px; font-weight:700; color:var(--accent-deep); display:flex; align-items:center; gap:6px; }
.answer-actions { display:flex; gap:6px; }
.answer-body {
  font-size:14.5px; line-height:1.75;
  word-break:break-word; overflow-wrap:anywhere; min-width:0;
}
.answer-body h1, .answer-body h2, .answer-body h3 { margin-top:1.3em; color:var(--accent-deep); }
.answer-body h2 { font-size:17px; }
.answer-body h3 { font-size:15px; color:var(--accent-strong); }
.answer-body code {
  background:var(--bg-elev); padding:2px 6px; border-radius:5px;
  font-size:0.88em; color:var(--accent-deep);
}
.answer-body pre {
  background:var(--bg-tint); padding:12px; border-radius:var(--radius-sm); overflow-x:auto;
  white-space:pre-wrap; word-break:break-all; max-width:100%;
}
.answer-body pre code { white-space:pre-wrap; word-break:break-all; }
.answer-body a { color:var(--accent-strong); word-break:break-all; }
.answer-body a.cite {
  display:inline-block;
  background:var(--accent-soft); color:var(--accent-deep);
  padding:1px 7px; border-radius:6px;
  font-size:0.82em; margin:0 1px; text-decoration:none; font-weight:700;
  cursor:pointer;
}
.answer-body a.cite:hover { background:var(--accent); color:#fff; }
.answer-body mark { background:var(--mark); color:var(--mark-fg); padding:0 2px; border-radius:2px; }
.answer-body blockquote {
  border-left:3px solid var(--accent); background:var(--bg-tint);
  padding:10px 14px; margin:10px 0; border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text); font-style:italic;
}
.answer-body blockquote small { color:var(--text-dim); font-size:0.82em; font-style:normal; }
.answer-body .safety {
  background:rgba(255,122,138,0.08); border-left:3px solid var(--danger);
  padding:12px 14px; border-radius:var(--radius-sm); color:var(--accent-deep); margin:14px 0;
}
.followup { margin-top:22px; padding-top:16px; border-top:1px solid var(--border); }
.followup textarea { width:100%; padding:10px 12px; font:14px/1.5 inherit; resize:vertical; }
.followup button { margin-top:8px; }

.docs-pane {
  background:var(--bg-soft); border:1px solid var(--border);
  border-radius:var(--radius); padding:16px;
  max-height:calc(100vh - 105px); overflow-y:auto;
  position:sticky; top:85px; box-shadow:var(--shadow);
}
.docs-head { margin-bottom:12px; }
.docs-head h3 { margin:0 0 8px; font-size:13.5px; font-weight:700; color:var(--accent-deep); display:flex; align-items:center; gap:6px; }
.docs-count { background:var(--accent); color:#fff; padding:2px 8px; border-radius:11px; font-size:10.5px; font-weight:700; margin-left:6px; }
.docs-filter { display:flex; gap:4px; flex-wrap:wrap; }
.bucket-btn {
  background:transparent; color:var(--text-faint); border:1px solid var(--border);
  padding:3px 9px; border-radius:14px; font-size:10.5px; transition:all .15s;
}
.bucket-btn.active { background:var(--accent); color:#fff; border-color:var(--accent); }
.docs-list { display:flex; flex-direction:column; gap:8px; margin-top:10px; }
.doc-card {
  background:var(--bg-soft); border:1px solid var(--border);
  border-radius:var(--radius-sm); padding:11px 13px; cursor:pointer; transition:all .15s;
}
.doc-card:hover { border-color:var(--accent); background:var(--bg-tint); transform:translateY(-1px); box-shadow:var(--shadow); }
.doc-card .idx { display:inline-block; background:var(--accent-soft); color:var(--accent-deep); padding:1px 7px; border-radius:5px; font-size:11px; font-weight:700; margin-right:6px; }
.doc-card .src { font-size:10.5px; color:var(--text-faint); }
.doc-card .bucket { display:inline-block; margin-left:6px; padding:1px 7px; border-radius:4px; font-size:10px; font-weight:700; }
.doc-card .bucket.directly_relevant { background:rgba(126,199,151,0.18); color:#469864; }
.doc-card .bucket.supportive { background:var(--accent-soft); color:var(--accent-deep); }
.doc-card .bucket.tangential { background:var(--bg-elev); color:var(--text-dim); }
.doc-card .bucket.irrelevant { background:rgba(255,122,138,0.12); color:var(--danger); }
.doc-card .t { font-weight:600; margin:4px 0 2px; font-size:12.5px; color:var(--text); word-break:break-word; }
.doc-card .sum { font-size:11.5px; color:var(--text-dim); line-height:1.5; }

/* ---- Modals ---- */
.modal { position:fixed; inset:0; z-index:100; display:flex; align-items:center; justify-content:center; }
.modal-backdrop { position:absolute; inset:0; background:rgba(180,80,120,0.35); backdrop-filter:blur(4px); }
.modal-panel {
  position:relative; background:var(--bg-soft); border:1px solid var(--border);
  border-radius:var(--radius); width:min(900px,92vw); max-height:88vh;
  overflow:hidden; display:flex; flex-direction:column;
  box-shadow:var(--shadow-lg);
}
.modal-head { display:flex; align-items:center; padding:16px 20px; border-bottom:1px solid var(--border); }
.modal-title { flex:1; font-size:15px; font-weight:700; color:var(--accent-deep); word-break:break-word; }
.close-x {
  background:transparent; color:var(--text-faint);
  font-size:26px; line-height:1; padding:0 4px; border-radius:50%; width:32px; height:32px;
  display:flex; align-items:center; justify-content:center;
}
.close-x:hover { background:var(--bg-tint); color:var(--accent-deep); }
.modal-citation {
  padding:11px 20px; color:var(--text-dim); font-size:11.5px;
  background:var(--bg-tint); border-bottom:1px solid var(--border); word-break:break-all;
}
.modal-citation a { color:var(--accent-strong); }
.modal-quotes { padding:11px 20px; border-bottom:1px solid var(--border); background:var(--bg-soft); }
.modal-quotes .q {
  background:rgba(255,243,158,0.35); border-left:3px solid var(--mark);
  padding:7px 12px; border-radius:5px; margin-bottom:6px;
  font-size:13px; color:var(--text);
}
.modal-body {
  padding:20px 24px; overflow-y:auto; flex:1; line-height:1.75; font-size:14px;
  white-space:pre-wrap; word-break:break-word; overflow-wrap:anywhere;
}
.modal-body mark { background:var(--mark); color:var(--mark-fg); padding:0 2px; border-radius:2px; }
.modal-body .quote-hit {
  background:rgba(126,199,151,0.28); outline:2px solid #7ec797;
  outline-offset:1px; border-radius:3px;
}
.modal-body .license-warn { color:var(--warn); font-size:11.5px; margin-top:6px; }

.history-list-modal { padding:8px 20px 20px; overflow-y:auto; max-height:60vh; }
.history-list-modal .history-item { padding:11px 12px; border-bottom:1px solid var(--border); cursor:pointer; border-radius:var(--radius-sm); }
.history-list-modal .history-item:hover { background:var(--bg-tint); }
.history-list-modal .t { font-weight:600; font-size:13px; color:var(--text); }
.history-list-modal .m { font-size:11px; color:var(--text-faint); margin-top:3px; }

.catalog-body { padding:14px 20px; overflow-y:auto; max-height:70vh; font-size:13px; }
.catalog-body table { width:100%; border-collapse:collapse; }
.catalog-body td { padding:5px 6px; border-bottom:1px solid var(--border); }
.catalog-body td.n { text-align:right; color:var(--accent-deep); font-weight:700; }
.catalog-body a { color:var(--accent-strong); word-break:break-all; font-size:11px; }
.catalog-body .lic { font-size:10.5px; color:var(--text-faint); }

/* ---- Empty state ---- */
.empty-hero { text-align:center; padding:30px 20px; color:var(--text-dim); }
.empty-hero .mascot { font-size:54px; line-height:1; margin-bottom:8px; }
.empty-hero p { margin:6px 0; font-size:13px; }

/* ============================================================ */
/* Mobile (≤900px) — must come AFTER base rules to override     */
/* ============================================================ */
@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { display: none !important; }
  .top { padding: 11px 14px; gap: 10px; }
  .brand { font-size: 16px; }
  .brand .logo { width: 30px; height: 30px; font-size: 15px; }
  .top-stats { font-size: 11px; padding-left: 4px; }
  .main { padding: 14px 12px; gap: 12px; }
  .composer { padding: 16px 14px; border-radius: 14px; }
  .composer::before { display: none; } /* drop the deco circle */
  .composer-title { font-size: 16px; }
  .composer-sub { font-size: 11.5px; line-height: 1.5; }
  #taskInput { font-size: 14px; padding: 11px 12px; min-height: 84px; }
  .composer-row { flex-wrap: wrap; gap: 8px; margin-top: 10px; }
  .composer-row .upload-btn { order: 1; flex: 0 0 auto; padding: 8px 12px; font-size: 12.5px; }
  .composer-row .composer-hint { display: none; }
  .composer-row .primary {
    order: 2; flex: 1 1 auto;
    padding: 11px 16px; font-size: 13.5px;
    max-width: 60%;
  }
  .top-mobile-actions { display: flex; }
  .top-stats { font-size: 11px; }
  .progress-strip { padding: 12px 14px; border-radius: 14px; }
  .phase { font-size: 10.5px; padding: 4px 9px; }
  .progress-meta { font-size: 11px; }
  .answer-pane { padding: 18px 16px; border-radius: 14px; }
  .answer-head h2 { font-size: 15px; }
  .answer-body { font-size: 14px; line-height: 1.7; }
  .docs-pane {
    padding: 14px;
    max-height: none;
    position: static;        /* no sticky on mobile — flows naturally */
    border-radius: 14px;
  }
  .results { grid-template-columns: 1fr; gap: 12px; }
  .modal-panel { width: 100vw; max-height: 100vh; border-radius: 0; }
  .modal-head { padding: 12px 16px; }
  .modal-body { padding: 14px 16px; font-size: 13.5px; }
  .modal-citation { padding: 9px 16px; font-size: 11px; }
  .modal-quotes { padding: 9px 16px; }
}

/* Very small phones */
@media (max-width: 380px) {
  .top-stats { display: none; }   /* save space on tiny screens */
  .main { padding: 12px 8px; }
  .composer { padding: 14px 12px; }
}