/* LƯU NGÂN COVER MAKER — giao diện beige/ivory tối giản */

:root {
  --ivory: #F6F0E7;
  --card: #FFFDF9;
  --beige: #D7C4A5;
  --gold: #B99A63;
  --brown: #302A26;
  --brown2: #71655A;
  --line: #E7DCC9;
  --danger: #A34A3A;
  --radius: 14px;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  background: var(--ivory);
  color: var(--brown);
  min-height: 100vh;
  padding-bottom: 60px;
}

/* ── Header ── */
.topbar {
  padding: 18px 20px 14px;
  text-align: center;
  border-bottom: 1px solid var(--line);
  background: var(--card);
}
.brandline {
  font-size: 17px;
  letter-spacing: 3px;
  color: var(--brown);
}
.brandline b { color: var(--gold); font-weight: 700; }
.subline {
  font-size: 12px;
  color: var(--brown2);
  margin-top: 3px;
  letter-spacing: 0.5px;
}

/* ── Layout ── */
.layout {
  display: grid;
  grid-template-areas: "controls" "preview" "action" "history";
  gap: 18px;
  padding: 18px 16px;
  max-width: 560px;
  margin: 0 auto;
}
.controls   { grid-area: controls; display: flex; flex-direction: column; gap: 16px; }
.preview-col{ grid-area: preview; }
.action-col { grid-area: action; }
.history-col{ grid-area: history; }

@media (min-width: 960px) {
  .layout {
    grid-template-areas:
      "controls preview"
      "action   preview"
      "history  history";
    grid-template-columns: 40% 1fr;
    max-width: 1100px;
    align-items: start;
    gap: 26px;
    padding: 26px 24px;
  }
  .preview-col { position: sticky; top: 20px; }
}

/* ── Steps ── */
.step {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.step-head {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--brown);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.step-head .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--gold);
  color: #fff;
  font-size: 12px;
  flex: none;
}
.step-head .opt { font-weight: 400; letter-spacing: 0; color: var(--brown2); font-size: 11.5px; }

.hint { font-size: 12.5px; color: var(--brown2); line-height: 1.5; }
.warn-msg { font-size: 12.5px; color: var(--danger); margin-top: 6px; }

/* ── Platform ── */
.platform-row { display: flex; gap: 10px; }
.pf-btn {
  flex: 1;
  padding: 13px 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  background: var(--ivory);
  color: var(--brown2);
  cursor: pointer;
  transition: all .15s;
}
.pf-btn.active {
  background: var(--brown);
  border-color: var(--brown);
  color: #fff;
}

/* ── Upload ── */
.upload-btn {
  width: 100%;
  padding: 15px 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1px;
  border: 1.5px dashed var(--gold);
  border-radius: 12px;
  background: #FBF7EF;
  color: var(--gold);
  cursor: pointer;
}
.upload-btn:active { transform: scale(.99); }

.src-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--brown2);
}
#src-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.quality-badge {
  flex: none;
  font-size: 11.5px;
  padding: 3px 9px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--ivory);
}
.quality-badge.good { color: #4C7A4C; border-color: #BCD3BC; background: #F0F6F0; }
.quality-badge.mid  { color: #8A6D2F; border-color: #E0CFA5; background: #FAF3E2; }
.quality-badge.bad  { color: var(--danger); border-color: #DDB3A9; background: #F9EEEB; }

/* ── Video panel ── */
.video-panel { margin-top: 12px; }
.video-panel video {
  width: 100%;
  max-height: 260px;
  border-radius: 10px;
  background: #000;
  display: block;
}
.timeline-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
}
.timeline-row input[type=range] { flex: 1; }
.time-label { font-size: 12px; color: var(--brown2); min-width: 40px; text-align: right; }
.frame-btn {
  width: 100%;
  margin-top: 10px;
  padding: 12px 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  border: none;
  border-radius: 12px;
  background: var(--gold);
  color: #fff;
  cursor: pointer;
}

/* ── Zoom ── */
.zoom-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--brown2);
}
.zoom-row input[type=range] { flex: 1; }
.mini-btn {
  padding: 6px 12px;
  font-size: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--ivory);
  color: var(--brown2);
  cursor: pointer;
  flex: none;
}

input[type=range] { accent-color: var(--gold); }

/* ── Title ── */
.title-input {
  width: 100%;
  padding: 13px 14px;
  font-size: 16px;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  background: var(--ivory);
  color: var(--brown);
  outline: none;
}
.title-input:focus { border-color: var(--gold); }
.title-input + .hint { margin-top: 7px; }
textarea.title-input { resize: vertical; min-height: 58px; font-family: inherit; line-height: 1.4; }

/* Thanh Admin */
.admin-bar { border-color: var(--gold); background: #FBF6EC; }
.cmp-row { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--brown2); cursor: pointer; margin-top: 12px; }
.cmp-row input { width: 18px; height: 18px; accent-color: var(--gold); flex: none; }
.cfg-row {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  font-size: 12.5px; color: var(--brown2); padding: 5px 0;
}
.cfg-row input {
  width: 88px; flex: none; padding: 6px 8px; font-size: 13px;
  border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--brown);
}
.cfg-sub {
  font-size: 11.5px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase;
  color: var(--gold); margin: 14px 0 6px; padding-top: 10px; border-top: 1px solid var(--line);
}
.cfg-tabs { display: flex; gap: 6px; margin-bottom: 12px; }
.cfg-tab-btn {
  flex: 1; padding: 8px 0; font-size: 12.5px; font-weight: 600;
  border: 1px solid var(--line); border-radius: 9px; background: var(--ivory);
  color: var(--brown2); cursor: pointer;
}
.cfg-tab-btn.active { background: var(--brown); border-color: var(--brown); color: #fff; }
.cfg-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.calib-row { display: inline-block; cursor: pointer; }
.cmp-box { display: flex; gap: 10px; margin-top: 10px; }
.cmp-box figure { flex: 1; margin: 0; text-align: center; }
.cmp-box canvas {
  width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--line); background: var(--card);
}
.cmp-box figcaption { font-size: 11.5px; color: var(--brown2); margin-top: 5px; }

/* Chế độ xem preview */
.pv-row {
  display: flex; flex-wrap: wrap; gap: 7px; margin: 0 auto 10px;
  max-width: 400px; justify-content: center;
}
.pv-btn {
  flex: 1 1 auto; min-width: 92px; padding: 9px 10px; font-size: 12px; font-weight: 600;
  border: 1px solid var(--line); border-radius: 10px; background: var(--card);
  color: var(--brown2); cursor: pointer;
}
.pv-btn.active { background: var(--gold); border-color: var(--gold); color: #fff; }
.pv-note { max-width: 400px; margin: 8px auto 0; text-align: center; }

/* Trạng thái tô vàng */
.hl-status { font-size: 12.5px; color: var(--brown2); margin-top: 10px; line-height: 1.5; }
.hl-status b { color: var(--gold); }
.hl-clear { margin-top: 8px; }
.chip.anchor { border-color: var(--gold); border-style: dashed; color: var(--gold); background: #FBF6EC; }

/* ── Chips ── */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 600;
  border: 1.5px solid var(--line);
  border-radius: 20px;
  background: var(--ivory);
  color: var(--brown);
  cursor: pointer;
}
.chip.on {
  background: var(--gold);
  border-color: var(--gold);
  color: #fff;
}

/* ── Preview ── */
.canvas-shell {
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 6px 30px rgba(48,42,38,.14);
  border: 1px solid var(--line);
  background: var(--card);
  max-width: 400px;
  margin: 0 auto;
}
#cv {
  display: block;
  width: 100%;
  height: auto;
  touch-action: none;
  cursor: grab;
}
#cv.dragging { cursor: grabbing; }

/* ── Action ── */
.generate-btn {
  width: 100%;
  padding: 17px 0;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 2px;
  border: none;
  border-radius: 14px;
  background: var(--brown);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(48,42,38,.25);
}
.generate-btn:active { transform: scale(.99); }
.generate-btn:disabled { opacity: .5; cursor: default; }

/* ── History ── */
.history-head { margin-bottom: 12px; }
.history-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 14px;
}
.hist-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}
.hist-item img { width: 100%; display: block; aspect-ratio: 9/16; object-fit: cover; }
.hist-meta { padding: 8px 10px; }
.hist-title {
  font-size: 12px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.hist-sub { font-size: 11px; color: var(--brown2); margin-top: 2px; }
.hist-actions { display: flex; gap: 6px; padding: 0 10px 10px; }
.hist-btn {
  flex: 1;
  padding: 6px 0;
  font-size: 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--ivory);
  color: var(--brown2);
  cursor: pointer;
}
.hist-btn.del { color: var(--danger); }

/* ── Modal ── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(48,42,38,.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 50;
}
.modal-card {
  background: var(--card);
  border-radius: 18px;
  width: 100%;
  max-width: 420px;
  max-height: 92vh;
  overflow: auto;
  box-shadow: 0 10px 40px rgba(0,0,0,.3);
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: var(--card);
}
.close-btn {
  border: none;
  background: none;
  font-size: 17px;
  color: var(--brown2);
  cursor: pointer;
  padding: 4px 8px;
}
.modal-body { padding: 16px 18px 20px; }
.result-shell {
  max-width: 230px;
  margin: 0 auto 14px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
}
.result-shell img { width: 100%; display: block; }
.checklist { list-style: none; margin-bottom: 12px; }
.checklist li { font-size: 13px; padding: 3px 0; }
.checklist li.ok::before   { content: "✔ "; color: #4C7A4C; }
.checklist li.warn::before { content: "⚠ "; color: #8A6D2F; }
.checklist li.bad::before  { content: "✖ "; color: var(--danger); }
.ios-hint { margin-bottom: 12px; }
.dl-row { display: flex; gap: 10px; }
.dl-btn {
  flex: 1;
  padding: 13px 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1px;
  border: 1.5px solid var(--gold);
  border-radius: 12px;
  background: var(--card);
  color: var(--gold);
  cursor: pointer;
}
.dl-btn.primary { background: var(--gold); color: #fff; }

/* ── Toast ── */
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  background: var(--brown);
  color: #fff;
  font-size: 13.5px;
  padding: 11px 20px;
  border-radius: 30px;
  box-shadow: 0 4px 20px rgba(0,0,0,.25);
  z-index: 60;
  max-width: 90vw;
  text-align: center;
}

/* Thanh báo có bản mới */
.update-bar {
  position: fixed; left: 0; right: 0; top: 0; z-index: 80;
  display: flex; align-items: center; justify-content: center; gap: 14px;
  padding: 11px 16px; font-size: 13.5px;
  background: var(--brown); color: #fff;
  box-shadow: 0 2px 14px rgba(0,0,0,.25);
}
.update-bar button {
  padding: 7px 15px; font-size: 13px; font-weight: 700;
  border: none; border-radius: 8px; background: var(--gold); color: #fff; cursor: pointer;
}

[hidden] { display: none !important; }