:root {
  --bg: #f4f1eb;
  --fg: #3a3a38;
  --accent: #e85d2a;
  --accent-hover: #d04e1f;
  --muted: #9c9889;
  --card: #fff;
  --card-border: #e2ded6;
  --success: #2d8a4e;
  --error: #c43d3d;
  --radius: 14px;
  --shimmer: linear-gradient(90deg, #ebe8e2 25%, #f0ede7 50%, #ebe8e2 75%);
}

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

body {
  font-family: 'DM Mono', monospace;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  overflow-x: hidden;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  opacity: 0.03;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 128px;
}

.page {
  max-width: 620px;
  margin: 0 auto;
  padding: 60px 24px 80px;
}

.top-nav {
  display: flex;
  justify-content: space-between;
  margin-bottom: 24px;
  font-size: 0.72rem;
}
.admin-link { color: var(--muted); text-decoration: underline; }
.admin-link:hover { color: var(--fg); }

.brand { margin-bottom: 48px; }
.brand h1 {
  font-family: 'Instrument Serif', serif;
  font-size: 4.2rem;
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--fg);
}
.brand h1 em { font-style: italic; color: var(--accent); }
.brand p {
  margin-top: 10px;
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

textarea {
  width: 100%;
  padding: 18px 20px;
  border: 1.5px solid var(--card-border);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--fg);
  font-family: 'DM Mono', monospace;
  font-size: 0.88rem;
  outline: none;
  resize: none;
  min-height: 56px;
  transition: border-color 0.25s, box-shadow 0.25s;
  margin-bottom: 6px;
}
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(232, 93, 42, 0.08);
}
textarea::placeholder { color: var(--muted); }

.hint {
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.controls {
  display: flex;
  gap: 10px;
  margin-bottom: 6px;
  align-items: center;
  flex-wrap: wrap;
}
.pill-group {
  display: flex;
  border: 1.5px solid var(--card-border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--card);
}
.pill {
  padding: 9px 18px;
  font-family: 'DM Mono', monospace;
  font-size: 0.76rem;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.pill.active { background: var(--fg); color: var(--bg); }
.pill:not(.active):hover { color: var(--fg); }

.fetch-btn {
  flex: 1;
  padding: 10px 20px;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-family: 'DM Mono', monospace;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.fetch-btn:hover { background: var(--accent-hover); }
.fetch-btn:active { transform: scale(0.98); }
.fetch-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* Cards */
.cards { margin-top: 24px; }

.card {
  display: flex;
  gap: 14px;
  border: 1.5px solid var(--card-border);
  border-radius: var(--radius);
  background: var(--card);
  padding: 14px;
  margin-bottom: 10px;
  animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.card-thumb {
  width: 120px;
  min-width: 120px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--card-border);
  flex-shrink: 0;
  position: relative;
}
.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.card-thumb .no-thumb {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
}
.card-thumb .no-thumb svg {
  width: 28px;
  height: 28px;
  opacity: 0.5;
}

.card-thumb.loading {
  background: var(--shimmer);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}
.skeleton-line {
  height: 12px;
  border-radius: 4px;
  background: var(--shimmer);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  margin-bottom: 6px;
}
.skeleton-line.short { width: 40%; height: 10px; }
.skeleton-line.medium { width: 75%; }
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.card-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.card-title {
  font-family: 'Instrument Serif', serif;
  font-size: 1rem;
  line-height: 1.3;
  color: var(--fg);
  margin-bottom: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.card-meta {
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.card-actions {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.card-dl-btn {
  padding: 6px 14px;
  border: none;
  border-radius: 7px;
  background: var(--fg);
  color: var(--bg);
  font-family: 'DM Mono', monospace;
  font-size: 0.7rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.card-dl-btn:hover { background: #2d2d2a; }
.card-dl-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.card-dl-btn.done { background: var(--success); color: #fff; }
.card-dl-btn.error { background: var(--error); color: #fff; }

.card-status {
  font-size: 0.68rem;
  color: var(--muted);
}
.card-status.downloading { color: var(--accent); }
.card-status.done { color: var(--success); }
.card-status.error { color: var(--error); }

.q-chip {
  padding: 4px 10px;
  border: 1.5px solid var(--card-border);
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: 0.65rem;
  cursor: pointer;
  transition: all 0.2s;
}
.q-chip.active {
  border-color: var(--fg);
  color: var(--fg);
  background: rgba(26,26,24,0.04);
}
.q-chip:hover:not(.active) { border-color: var(--muted); }

/* Error card */
.card.card-error {
  border-color: rgba(196, 61, 61, 0.2);
  background: rgba(196, 61, 61, 0.03);
}
.card-error-icon {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(196, 61, 61, 0.08);
  color: var(--error);
}
.card-error-icon svg {
  width: 24px;
  height: 24px;
}
.card-error-msg {
  font-size: 0.72rem;
  color: var(--error);
  margin-top: 2px;
  line-height: 1.4;
}
.card-error-url {
  font-size: 0.65rem;
  color: var(--muted);
  word-break: break-all;
  margin-top: 4px;
}

/* Download all bar */
.dl-all-bar {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}
.dl-all-btn {
  flex: 1;
  padding: 12px;
  border: none;
  border-radius: 10px;
  background: var(--fg);
  color: var(--bg);
  font-family: 'DM Mono', monospace;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.dl-all-btn:hover { background: #2d2d2a; }
.dl-all-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.spin {
  display: inline-block;
  width: 10px; height: 10px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 32px;
  border: 1.5px solid var(--card-border);
  border-radius: 12px;
  padding: 4px;
  background: var(--card);
}
.tab-btn {
  flex: 1;
  padding: 14px;
  border: none;
  border-radius: 9px;
  background: transparent;
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
}
.tab-btn.active { background: var(--fg); color: var(--bg); }
.tab-btn:not(.active):hover { color: var(--fg); }
.tab-panel[hidden] { display: none; }

.sheet-section {
  margin-top: 32px;
  border-top: 1.5px solid var(--card-border);
  padding-top: 20px;
}
.sheet-section:first-child { margin-top: 0; border-top: none; padding-top: 0; }
.sheet-label {
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.sheet-panel { display: flex; flex-direction: column; gap: 10px; }
.sheet-panel input {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--card-border);
  border-radius: 10px;
  background: var(--card);
  color: var(--fg);
  font-family: 'DM Mono', monospace;
  font-size: 0.82rem;
  outline: none;
  transition: border-color 0.25s;
}
.sheet-panel input:focus { border-color: var(--accent); }

.list-log { display: flex; flex-direction: column; gap: 4px; margin-top: 4px; }
.list-row {
  font-size: 0.72rem;
  color: var(--muted);
  padding: 8px 0;
  border-bottom: 1px solid var(--card-border);
}
.list-row:last-child { border-bottom: none; }
.list-row a { color: var(--accent); }
.list-row.done { color: var(--success); }
.list-row.error { color: var(--error); }
.list-url { color: var(--fg); word-break: break-all; }

.login-page { max-width: 420px; padding-top: 100px; }

/* Dashboard layout (public page) */
.dashboard {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 40px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 24px 80px;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 56px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.sidebar .brand { margin-bottom: 0; }
.sidebar .brand h1 { font-size: 2.6rem; }

.nav-list { display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 14px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  font-family: 'DM Mono', monospace;
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s;
}
.nav-item:not(.active):hover { color: var(--fg); background: rgba(0,0,0,0.03); }
.nav-item.active { background: var(--fg); color: var(--bg); }

.sidebar-footer {
  margin-top: auto;
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.03em;
  line-height: 1.8;
}
.sidebar-footer a { color: var(--muted); text-decoration: underline; }
.sidebar-footer a:hover { color: var(--fg); }

.content { min-width: 0; }
.content-section[hidden] { display: none; }
.section-title {
  font-family: 'Instrument Serif', serif;
  font-size: 1.7rem;
  font-weight: 400;
  margin-bottom: 6px;
}

.text-input {
  flex: 1;
  min-width: 200px;
  padding: 12px 16px;
  border: 1.5px solid var(--card-border);
  border-radius: 10px;
  background: var(--card);
  color: var(--fg);
  font-family: 'DM Mono', monospace;
  font-size: 0.82rem;
  outline: none;
  transition: border-color 0.25s;
}
.text-input:focus { border-color: var(--accent); }

/* Quét kênh */
.scan-toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin: 18px 0 12px;
}
.check-all {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.74rem;
  color: var(--muted);
  white-space: nowrap;
}
.scan-toolbar .fetch-btn { flex: initial; }

.progress-bar {
  height: 6px;
  border-radius: 4px;
  background: var(--card-border);
  overflow: hidden;
  margin-bottom: 6px;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.3s ease;
}
.progress-label {
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.03em;
}
.scan-progress { margin-bottom: 14px; }

.scan-list {
  display: flex;
  flex-direction: column;
  border: 1.5px solid var(--card-border);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}
.scan-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--card-border);
}
.scan-row:last-child { border-bottom: none; }
.scan-row .list-url { flex: 1; min-width: 0; font-size: 0.72rem; }
.scan-note {
  font-size: 0.68rem;
  color: var(--muted);
  margin-bottom: 12px;
}

.footer {
  margin-top: 48px;
  text-align: center;
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1.8;
}

/* Dashboard responsive */
@media (max-width: 860px) {
  .dashboard { grid-template-columns: 1fr; gap: 24px; padding: 32px 20px 60px; }
  .sidebar { position: static; flex-direction: row; flex-wrap: wrap; gap: 14px; align-items: center; }
  .sidebar .brand { margin-right: auto; }
  .sidebar .brand h1 { font-size: 2rem; }
  .sidebar .brand p { display: none; }
  .nav-list { flex-direction: row; flex: 1; }
  .nav-item { flex: 1; justify-content: center; }
  .sidebar-footer { display: none; }
}

/* Mobile */
@media (max-width: 500px) {
  .brand h1 { font-size: 3rem; }
  .page { padding: 40px 16px 60px; }
  .card { flex-direction: column; gap: 10px; }
  .card-thumb {
    width: 100%;
    min-width: unset;
    height: 160px;
  }
  .card-title { white-space: normal; }
  .controls { flex-wrap: wrap; }
  .fetch-btn { width: 100%; }
  .scan-toolbar { flex-direction: column; align-items: stretch; }
  .scan-toolbar .fetch-btn { flex: 1; }
}