/* Giao dien khung soan cua Xuong Carousel. Dung lai bien mau + font-role tu brand-tokens.css,
   chi them bien rieng cho canh bao tran (--warn) va nhip chuyen dong (--ease-out/--dur-*)
   vi bo token slide goc khong co hai nhom nay. */
* { box-sizing: border-box; }

:root {
  --warn: #C1443B;
  --warn-soft: rgba(193, 68, 59, .12);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --dur-fast: 150ms;
  --dur-med: 220ms;
}

body {
  margin: 0;
  padding: 32px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body-family), 'Be Vietnam Pro', system-ui, sans-serif;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Masthead + nhan kicker dung chung mot "chip" vang but da, lay lai motif ==highlight==
   cua chinh slide de khung soan va sac pham chia se cung mot ngon ngu hinh anh. */
.app-kicker,
.pane-kicker,
.caption-block label {
  display: flex;
  align-items: center;
  margin: 0 0 12px;
  font-family: var(--font-label-family), 'Be Vietnam Pro', sans-serif;
  font-weight: 600;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.app-kicker::before,
.pane-kicker::before,
.caption-block label::before {
  content: '';
  width: 13px;
  height: 13px;
  margin-right: 8px;
  border-radius: 3px;
  background: var(--mark);
  flex: none;
}
.app-kicker { margin-bottom: 10px; }

.app-header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--rule);
}
.app-header h1 {
  margin: 0 0 6px;
  font-family: var(--font-heading-family), 'Newsreader', serif;
  font-weight: var(--font-heading-weight);
  font-style: var(--font-heading-style);
  font-size: 30px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.app-tagline { margin: 0; color: var(--ink-2); font-size: 14px; }

.layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
}

.editor-pane, .preview-pane {
  background: var(--raise);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .03), 0 20px 40px -32px rgba(0, 0, 0, .25);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 28px;
  align-items: flex-start;
  margin-bottom: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--rule-soft);
}

.toolbar-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toolbar-group + .toolbar-group {
  padding-left: 24px;
  border-left: 1px solid var(--rule-soft);
}
@media (max-width: 900px) {
  .toolbar-group + .toolbar-group { padding-left: 0; border-left: none; }
}

.toolbar-label {
  font-family: var(--font-label-family), 'Be Vietnam Pro', sans-serif;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.utility-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.switch { display: flex; gap: 6px; flex-wrap: wrap; }
.switch button {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-label-family), 'Be Vietnam Pro', sans-serif;
  font-size: 12.5px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--rule);
  background: var(--raise);
  color: var(--ink);
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out);
}
.switch button:hover {
  border-color: var(--ink-2);
  transform: translateY(-1px);
}
.switch button:active { transform: translateY(0); }
.switch button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
  box-shadow: 0 4px 10px -6px rgba(0, 0, 0, .4);
}

.switch--theme button { padding-left: 10px; }
.swatch-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 7px;
  border: 1px solid rgba(0, 0, 0, .12);
  vertical-align: -1px;
}
.switch--theme [data-theme-value="light"] .swatch-dot { background: #1F5C57; }
.switch--theme [data-theme-value="dark"] .swatch-dot { background: #74D6C8; }
.switch--theme [data-theme-value="brand"] .swatch-dot { background: #EC7147; }
.switch--theme [data-theme-value="sage"] .swatch-dot { background: #56714A; }
.switch--theme [data-theme-value="terracotta"] .swatch-dot { background: #C1502E; }
.switch--theme [data-theme-value="ocean"] .swatch-dot { background: #4BC8B0; }
.switch--theme [data-theme-value="charcoal"] .swatch-dot { background: #B23A2E; }
.switch--theme [data-theme-value="blush"] .swatch-dot { background: #C0526B; }
.switch--theme [data-theme-value="indigo"] .swatch-dot { background: #9083E0; }

.ghost-button {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-label-family), 'Be Vietnam Pro', sans-serif;
  font-size: 12.5px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--rule);
  background: var(--raise);
  color: var(--ink);
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out);
}
.ghost-button:hover {
  border-color: var(--ink-2);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px -10px rgba(0, 0, 0, .35);
}
.ghost-button:active { transform: translateY(0); box-shadow: none; }

.primary-button {
  font-family: var(--font-label-family), 'Be Vietnam Pro', sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 11px 20px;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: var(--paper);
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out),
    filter var(--dur-fast) var(--ease-out);
}
.primary-button:hover:not(:disabled) {
  transform: translateY(-1px);
  filter: brightness(1.06);
  box-shadow: 0 10px 20px -12px rgba(0, 0, 0, .45);
}
.primary-button:active:not(:disabled) { transform: translateY(0); filter: brightness(1); }
.primary-button:disabled { opacity: .5; cursor: not-allowed; }

button:focus-visible,
label:focus-within,
textarea:focus-visible,
.signature-input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.signature-input {
  width: 168px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--rule);
  background: var(--raise);
  color: var(--ink);
  font-family: var(--font-label-family), 'Be Vietnam Pro', sans-serif;
  font-size: 12.5px;
  font-weight: 500;
  transition: border-color var(--dur-fast) var(--ease-out);
}
.signature-input::placeholder { color: var(--ink-2); opacity: .6; }

.editor-textarea {
  width: 100%;
  min-height: 420px;
  resize: vertical;
  padding: 16px 16px 16px 18px;
  border-radius: 8px;
  border: 1px solid var(--rule);
  background-color: var(--paper);
  background-image: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 23px,
    var(--rule-soft) 23px,
    var(--rule-soft) 24px
  );
  background-attachment: local;
  color: var(--ink);
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 14px;
  line-height: 24px;
  transition: border-color var(--dur-fast) var(--ease-out);
}
.editor-textarea:focus-visible { border-color: var(--accent); }

.hint {
  font-size: 12px;
  color: var(--ink-2);
  min-height: 16px;
  margin: 8px 0 0;
}
.hint:empty { margin: 0; }

.bg-image-control {
  display: flex;
  align-items: center;
  gap: 8px;
}

.draft-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
}

.preview-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-height: 640px;
  overflow-y: auto;
  padding: 16px;
  border-radius: 10px;
  background: var(--paper);
  box-shadow: inset 0 1px 4px rgba(0, 0, 0, .05);
}
.preview-list:empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
}
.preview-list:empty::after {
  content: 'Gõ nội dung bên trái để thấy slide ở đây.';
  font-family: var(--font-kicker-family), 'Newsreader', serif;
  font-style: italic;
  font-size: 15px;
  color: var(--ink-2);
  text-align: center;
  padding: 0 24px;
}

.slide-card {
  border: 1px solid var(--rule-soft);
  border-radius: 10px;
  padding: 12px;
  background: var(--raise);
  box-shadow: 0 10px 24px -18px rgba(0, 0, 0, .35);
  transition: transform var(--dur-med) var(--ease-out),
    box-shadow var(--dur-med) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
}
.slide-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 30px -16px rgba(0, 0, 0, .4);
}
.slide-card canvas {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid transparent;
  border-radius: 6px;
}
.slide-card.is-overflow { border-color: var(--warn); }
.slide-card.is-overflow canvas { border-color: var(--warn); }

@media (prefers-reduced-motion: no-preference) {
  .slide-card { animation: slideCardIn 260ms var(--ease-out) both; }
  .slide-card:nth-of-type(1) { animation-delay: 0ms; }
  .slide-card:nth-of-type(2) { animation-delay: 40ms; }
  .slide-card:nth-of-type(3) { animation-delay: 80ms; }
  .slide-card:nth-of-type(4) { animation-delay: 120ms; }
  .slide-card:nth-of-type(n+5) { animation-delay: 150ms; }
}
@keyframes slideCardIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.overflow-hint {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--warn);
  background: var(--warn-soft);
  padding: 6px 10px;
  border-radius: 4px;
}
.slide-download {
  margin-top: 10px;
  font-family: var(--font-label-family), 'Be Vietnam Pro', sans-serif;
  font-size: 12.5px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--rule);
  background: var(--raise);
  color: var(--ink);
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}
.slide-download:hover { border-color: var(--ink-2); transform: translateY(-1px); }

.preview-footer {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 20px;
}

.count-wrap { display: flex; flex-direction: column; }
.slide-count { font-size: 13px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.count-wrap.is-over-limit .slide-count { color: var(--warn); font-weight: 600; }
.limit-note {
  display: none;
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--warn);
}
.count-wrap.is-over-limit .limit-note { display: block; }

.caption-block {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
}
.caption-block label { margin-bottom: 10px; }
.caption-textarea {
  width: 100%;
  min-height: 160px;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--rule);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body-family), 'Be Vietnam Pro', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  resize: vertical;
  transition: border-color var(--dur-fast) var(--ease-out);
}
.caption-textarea:focus-visible { border-color: var(--accent); }
.caption-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}

.app-footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  text-align: center;
}
.footer-credit {
  margin: 0;
  font-size: 13px;
  color: var(--ink-2);
}
.footer-credit a {
  color: var(--ink);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.footer-credit a:hover {
  color: var(--accent);
  border-color: var(--accent);
}