/* Recto demo — task-first single page. Dark, calm, one accent. */

:root {
  --bg: #1c1e24;
  --panel: #24262e;
  --panel-2: #2b2e38;
  --line: #3a3e4a;
  --text: #e6e8ee;
  --muted: #9aa0ae;
  --accent: #4f8cff;
  --accent-soft: rgba(79, 140, 255, 0.18);
  --ok: #4fc06a;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font: 15px/1.45 "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}
.hidden { display: none !important; }
[hidden] { display: none !important; }   /* beat the display:flex rules below */

/* ── Toolbar ─────────────────────────────────────────────── */
#toolbar {
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.tb-group { display: flex; align-items: center; gap: 8px; }
.doc-title { font-weight: 600; color: var(--muted); max-width: 40vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tb-btn {
  background: none; border: 1px solid transparent; color: var(--text);
  font-size: 16px; width: 32px; height: 32px; border-radius: 6px; cursor: pointer;
}
.tb-btn:hover { background: var(--panel-2); }
.tb-btn.text-btn { width: auto; padding: 0 12px; font-size: 13px; border-color: var(--line); }
.tb-sep { width: 1px; height: 20px; background: var(--line); margin: 0 4px; }
.page-indicator input {
  width: 48px; text-align: right; background: var(--panel-2); color: var(--text);
  border: 1px solid var(--line); border-radius: 6px; padding: 4px 6px; font: inherit;
}
#page-count, #zoom-label { color: var(--muted); font-size: 13px; min-width: 40px; text-align: center; }

/* ── Landing ─────────────────────────────────────────────── */
#landing {
  height: calc(100% - 52px);
  overflow-y: auto;
  display: flex; flex-direction: column; align-items: center;
  padding: 48px 24px;
}
#drop-zone {
  max-width: 560px; width: 100%; text-align: center;
  border: 2px dashed var(--line); border-radius: 16px;
  padding: 48px 32px; transition: border-color 0.15s, background 0.15s;
}
#drop-zone.drag { border-color: var(--accent); background: var(--accent-soft); }
.dz-icon { font-size: 40px; color: var(--accent); }
#drop-zone h1 { font-size: 24px; margin: 12px 0 8px; }
.dz-sub { color: var(--muted); margin: 0 0 24px; }
.cta {
  background: var(--accent); color: #fff; border: none; border-radius: 8px;
  padding: 10px 22px; font: 600 15px/1 inherit; cursor: pointer;
}
.cta:hover { filter: brightness(1.1); }
#samples { margin-top: 40px; width: 100%; max-width: 560px; }
#samples h2 { font-size: 14px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
#sample-list { display: flex; flex-wrap: wrap; gap: 12px; }
.sample-card {
  display: flex; align-items: center; gap: 10px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 16px; color: var(--text); font: inherit; cursor: pointer;
}
.sample-card:hover { border-color: var(--accent); }
.sample-icon { font-size: 20px; color: var(--accent); }
.sample-size { color: var(--muted); font-size: 12px; }

/* ── Viewer ──────────────────────────────────────────────── */
#viewer-container {
  height: calc(100% - 52px);
  overflow: auto;
  display: flex; justify-content: center;
  padding: 24px;
}
.page-container {
  position: relative;
  width: var(--page-width);
  height: var(--page-height);
  background: #fff;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
  transform-origin: top center;
  flex: 0 0 auto;
}
.page-container img { display: block; width: 100%; height: 100%; user-select: none; }

/* page being read: a soft scanning shimmer */
.page-container.ocr-reading::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 0%, var(--accent-soft) 45%, transparent 60%);
  background-size: 100% 220%;
  animation: scan 1.6s linear infinite;
  pointer-events: none;
}
@keyframes scan {
  from { background-position: 0 -110%; }
  to { background-position: 0 110%; }
}
.page-container.ocr-read-flash::after {
  content: '';
  position: absolute; inset: 0;
  background: var(--accent-soft);
  animation: flash 0.8s ease-out forwards;
  pointer-events: none;
}
@keyframes flash { from { opacity: 1; } to { opacity: 0; } }

/* per-line highlights that fade in as lines are recognized */
.ocr-line {
  position: absolute;
  background: rgba(79, 140, 255, 0.22);
  border-radius: 2px;
  animation: lineIn 1.4s ease-out forwards;
  pointer-events: none;
}
@keyframes lineIn { 0% { opacity: 0; } 25% { opacity: 1; } 100% { opacity: 0; } }

/* ── OCR progress pill ───────────────────────────────────── */
#ocr-pill {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 999px;
  padding: 10px 20px; min-width: 280px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
  transition: opacity 0.4s;
  z-index: 30;
}
#ocr-pill.done { border-color: var(--ok); }
#ocr-pill.fade { opacity: 0; }
.pill-row { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.pill-spinner {
  width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid var(--line); border-top-color: var(--accent);
  animation: spin 0.9s linear infinite; flex: 0 0 auto;
}
#ocr-pill.done .pill-spinner { border: none; background: var(--ok); animation: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.pill-bar { height: 4px; background: var(--line); border-radius: 2px; margin-top: 8px; overflow: hidden; }
#pill-fill { height: 100%; width: 0; background: var(--accent); transition: width 0.3s; }
#ocr-pill.done #pill-fill { background: var(--ok); }

/* ── Attachments panel ───────────────────────────────────── */
#att-panel {
  position: fixed; top: 52px; right: 0; bottom: 0; width: 320px;
  background: var(--panel); border-left: 1px solid var(--line);
  display: flex; flex-direction: column;
  z-index: 20;
}
.att-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px 6px; }
.att-head h2 { margin: 0; font-size: 16px; }
.att-status { padding: 0 16px 10px; color: var(--muted); font-size: 13px; }
#att-cards { flex: 1; overflow-y: auto; padding: 4px 12px; }
.att-empty { color: var(--muted); font-size: 13px; text-align: center; padding: 32px 12px; }
.att-foot { padding: 10px 16px; border-top: 1px solid var(--line); }
.link-btn { background: none; border: none; color: var(--muted); font: 12px inherit; cursor: pointer; text-decoration: underline; padding: 0; }
.link-btn:hover { color: var(--text); }

.att-card {
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px;
  padding: 12px; margin-bottom: 10px;
}
.att-card.partial { border-style: dashed; }
.att-card.partial .att-meta::after { content: ' · still reading…'; color: var(--accent); }
.att-card-top { display: flex; align-items: center; gap: 10px; }
.att-type-icon { font-size: 22px; }
.att-label { font-weight: 600; }
.att-meta { color: var(--muted); font-size: 12px; }
.att-actions { display: flex; gap: 8px; margin-top: 10px; }
.att-actions button {
  flex: 1; padding: 7px 0; border-radius: 7px; border: 1px solid var(--line);
  background: none; color: var(--text); font: 600 13px inherit; cursor: pointer;
}
.att-actions .primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.att-actions button:hover:not(:disabled) { filter: brightness(1.15); }
.att-actions button:disabled { opacity: 0.4; cursor: default; }

/* floating toggle shown when the panel is closed */
#att-toggle {
  position: fixed; top: 64px; right: 16px; z-index: 20;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--panel-2); border: 1px solid var(--line);
  font-size: 18px; cursor: pointer; color: var(--text);
}
#att-toggle:hover { border-color: var(--accent); }
#att-badge {
  position: absolute; top: -4px; right: -4px;
  background: var(--accent); color: #fff; font-size: 11px; font-weight: 700;
  min-width: 18px; height: 18px; line-height: 18px; border-radius: 9px; padding: 0 4px;
}