/* ── CSS custom properties ─────────────────────────────────────────────────── */
:root {
  --bg: #f5f5f5;
  --bg-alt: #ececec;
  --card-bg: #ffffff;
  --text: #1a1a1a;
  --text-muted: #777;
  --text-card: #1a1a2e;
  --header-bg: #1a1a2e;
  --header-text: #ffffff;
  --header-meta: #aaaaaa;
  --accent: #a78bfa;
  --accent-hover: #c4b5fd;
  --border: #e0e0e0;
  --card-shadow: rgba(0, 0, 0, 0.08);
  --card-shadow-hover: rgba(0, 0, 0, 0.16);
  --drop-border: #aaaaaa;
  --drop-bg: #fafafa;
  --drop-bg-hover: #f0eeff;
  --input-bg: #ffffff;
  --input-border: #cccccc;
  --input-border-focus: #a78bfa;
  --error-text: #c0392b;
  --error-bg: #fdecea;
  --success-text: #1a7a3d;
  --success-bg: #eaf7ef;
  --danger: #c0392b;
  --danger-hover: #e74c3c;
  --danger-bg: #fff0ee;
  --token-bg: #f0f0f0;
}

[data-theme="dark"] {
  --bg: #111111;
  --bg-alt: #1a1a1a;
  --card-bg: #1e1e1e;
  --text: #e0e0e0;
  --text-muted: #888888;
  --text-card: #e0e0e0;
  --header-bg: #000000;
  --header-text: #e0e0e0;
  --header-meta: #666666;
  --accent: #b794f4;
  --accent-hover: #c4b5fd;
  --border: #333333;
  --card-shadow: rgba(0, 0, 0, 0.3);
  --card-shadow-hover: rgba(0, 0, 0, 0.5);
  --drop-border: #555555;
  --drop-bg: #1a1a1a;
  --drop-bg-hover: #2a2040;
  --input-bg: #2a2a2a;
  --input-border: #444444;
  --input-border-focus: #b794f4;
  --error-text: #f08080;
  --error-bg: #3a1a1a;
  --success-text: #5dbb7a;
  --success-bg: #1a3a25;
  --danger: #e57373;
  --danger-hover: #ef9a9a;
  --danger-bg: #3a1a1a;
  --token-bg: #2a2a2a;
}

/* ── Reset ─────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Base ──────────────────────────────────────────────────────────────────── */
body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background 0.3s, color 0.3s;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
a:visited { color: var(--accent); }

/* ── Header ────────────────────────────────────────────────────────────────── */
.site-header {
  background: var(--header-bg);
  color: var(--header-text);
  padding: 0 1.5rem;
  height: 56px;
  flex-shrink: 0;
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.brand-name {
  color: var(--accent);
  font-weight: 700;
  font-size: 1.1rem;
  white-space: nowrap;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
}
.nav-link {
  color: var(--header-meta);
  font-size: 0.9rem;
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}
.nav-link:hover { color: var(--header-text); background: rgba(255,255,255,0.08); }
.nav-link-primary {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}
.nav-link-primary:hover { background: var(--accent-hover); color: #fff; }

#theme-toggle {
  background: none;
  border: 1px solid var(--header-meta);
  border-radius: 6px;
  color: var(--header-text);
  font-size: 1rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  line-height: 1;
  flex-shrink: 0;
}
#theme-toggle:hover { border-color: var(--accent); }

/* ── Main / footer ─────────────────────────────────────────────────────────── */
.site-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1rem;
  flex: 1;
  width: 100%;
}

.site-footer {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 1.5rem;
  border-top: 1px solid var(--border);
}

/* ── Page header ───────────────────────────────────────────────────────────── */
.page-header {
  margin-bottom: 1.5rem;
}
.page-header h1 {
  font-size: 1.8rem;
  margin-bottom: 0.25rem;
}
.page-subtitle { color: var(--text-muted); font-size: 0.9rem; }

.back-link {
  display: inline-block;
  margin-top: 0.4rem;
  font-size: 0.875rem;
  color: var(--accent);
}

/* ── Card ──────────────────────────────────────────────────────────────────── */
.card {
  background: var(--card-bg);
  border-radius: 12px;
  box-shadow: 0 1px 4px var(--card-shadow);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  border: 1px solid var(--border);
}
.card h2 { font-size: 1rem; margin-bottom: 1rem; }

/* ── Pack grid (explore) ───────────────────────────────────────────────────── */
.pack-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 900px) { .pack-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px) { .pack-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 380px) { .pack-grid { grid-template-columns: 1fr; } }

.pack-card {
  background: var(--card-bg);
  border-radius: 12px;
  box-shadow: 0 1px 4px var(--card-shadow);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  color: var(--text);
  transition: box-shadow 0.2s, transform 0.15s;
  text-decoration: none;
}
.pack-card:hover {
  box-shadow: 0 4px 12px var(--card-shadow-hover);
  transform: translateY(-2px);
  color: var(--text);
}

.pack-preview {
  aspect-ratio: 1;
  background: var(--bg-alt);
  overflow: hidden;
}

.preview-grid {
  display: grid;
  width: 100%;
  height: 100%;
}
.preview-grid-1 { grid-template-columns: 1fr; }
.preview-grid-2 { grid-template-columns: 1fr 1fr; }
.preview-grid-3, .preview-grid-4 { grid-template-columns: 1fr 1fr; }

.preview-cell {
  overflow: hidden;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
}
.preview-cell img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 4px;
}
.preview-cell-empty { background: var(--bg-alt); }
.preview-empty-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.pack-card-body {
  padding: 0.75rem;
}
.pack-name {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.2rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.pack-meta { font-size: 0.75rem; color: var(--text-muted); }

/* ── Pack detail ─────────────────────────────────────────────────────────────*/
.pack-detail-header {
  margin-bottom: 1.5rem;
}
.pack-detail-header h1 { font-size: 2rem; margin-bottom: 0.4rem; }
.pack-description { color: var(--text-muted); margin-bottom: 0.6rem; }
.pack-detail-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.pack-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.report-link {
  font-size: 0.8rem;
  color: var(--text-muted);
  opacity: 0.6;
  margin-left: auto;
}
.report-link:hover { opacity: 1; }

/* ── Sticker view grid ───────────────────────────────────────────────────────*/
.sticker-view-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 0.75rem;
}
.sticker-view-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
}
.sticker-view-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  border-radius: 8px;
  background: var(--bg-alt);
  padding: 4px;
}
.sticker-emoji {
  font-size: 1.2rem;
  text-align: center;
}

/* ── Sticker edit grid ───────────────────────────────────────────────────────*/
.sticker-edit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.sticker-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.5rem;
}
.sticker-thumb {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  border-radius: 6px;
  background: var(--bg-alt);
}
.sticker-remove-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  background: rgba(0,0,0,0.55);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 22px;
  height: 22px;
  font-size: 0.7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.sticker-remove-btn:hover { background: var(--danger); }
.emoji-input {
  width: 100%;
  text-align: center;
  font-size: 1rem;
  padding: 0.15rem 0.25rem;
  border: 1px solid var(--input-border);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
}
.emoji-input:focus {
  outline: none;
  border-color: var(--input-border-focus);
}

/* ── Drop zone ───────────────────────────────────────────────────────────────*/
.drop-zone {
  border: 2px dashed var(--drop-border);
  border-radius: 12px;
  background: var(--drop-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 2.5rem 1rem;
  margin-bottom: 1.25rem;
  transition: background 0.2s, border-color 0.2s;
  text-align: center;
}
.drop-zone:hover, .drop-zone.drag-over {
  background: var(--drop-bg-hover);
  border-color: var(--accent);
}
.drop-zone-inner { pointer-events: none; }
.drop-zone-icon { font-size: 2.5rem; margin-bottom: 0.5rem; }
.drop-zone-title { font-weight: 600; margin-bottom: 0.25rem; }
.drop-zone-hint { font-size: 0.85rem; color: var(--text-muted); }
.drop-zone-small {
  padding: 1.25rem 1rem;
}
.drop-zone-small .drop-zone-title { font-size: 0.9rem; }

/* ── Upload progress ─────────────────────────────────────────────────────────*/
.upload-progress {
  text-align: center;
  padding: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

/* ── Forms ───────────────────────────────────────────────────────────────────*/
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}
.form-group input[type="text"],
.form-group textarea {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--input-border);
  border-radius: 8px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s;
}
.form-group input[type="text"]:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--input-border-focus);
}
.form-group-inline { display: flex; align-items: center; }
.toggle-label { display: flex; align-items: center; gap: 0.5rem; cursor: pointer; }
.toggle-label input[type="checkbox"] { width: 16px; height: 16px; cursor: pointer; }
.toggle-text { font-weight: normal; font-size: 0.9rem; }
.required { color: var(--danger); }

.form-actions { display: flex; gap: 0.75rem; margin-top: 0.25rem; flex-wrap: wrap; }

/* ── Buttons ─────────────────────────────────────────────────────────────────*/
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.5rem 1.1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s, filter 0.15s;
  line-height: 1.4;
  font-family: inherit;
}
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover:not(:disabled) { filter: brightness(1.1); color: #fff; }
.btn-secondary {
  background: var(--card-bg);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover:not(:disabled) { background: var(--bg-alt); color: var(--text); }
.btn-ghost { background: none; color: var(--accent); border-color: var(--border); }
.btn-ghost:hover:not(:disabled) { background: var(--bg-alt); color: var(--accent); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover:not(:disabled) { filter: brightness(1.1); color: #fff; }
.btn-large { padding: 0.7rem 1.6rem; font-size: 1rem; }
.btn-small { padding: 0.3rem 0.65rem; font-size: 0.8rem; }

/* ── Messages ────────────────────────────────────────────────────────────────*/
.error-message {
  background: var(--error-bg);
  color: var(--error-text);
  border: 1px solid var(--error-text);
  border-radius: 8px;
  padding: 0.6rem 1rem;
  font-size: 0.875rem;
  margin-top: 0.75rem;
}
.success-message {
  background: var(--success-bg);
  color: var(--success-text);
  border: 1px solid var(--success-text);
  border-radius: 8px;
  padding: 0.6rem 1rem;
  font-size: 0.875rem;
  margin-top: 0.75rem;
}

/* ── Section title ───────────────────────────────────────────────────────────*/
.section-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.count-label {
  font-size: 0.8rem;
  font-weight: normal;
  color: var(--text-muted);
}

/* ── Meta card ───────────────────────────────────────────────────────────────*/
.meta-card { margin-bottom: 1.5rem; }
.composer { max-width: 800px; }

/* ── Token card ──────────────────────────────────────────────────────────────*/
.token-card { margin-bottom: 1.5rem; }
.token-hint { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 0.75rem; }
.token-display {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.token-display code {
  flex: 1;
  background: var(--token-bg);
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
  font-size: 0.8rem;
  word-break: break-all;
  font-family: monospace;
}
.token-bookmark-hint { font-size: 0.8rem; color: var(--text-muted); }

/* ── Danger zone ─────────────────────────────────────────────────────────────*/
.danger-zone {
  border-color: var(--danger);
  background: var(--danger-bg);
  margin-top: 2rem;
}
.danger-zone h2 { color: var(--danger); }
.danger-zone p { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 0.75rem; }

/* ── Confirm dialog ──────────────────────────────────────────────────────────*/
.confirm-dialog {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card-bg);
  color: var(--text);
  padding: 1.5rem;
  max-width: 400px;
  width: 90vw;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.confirm-dialog::backdrop { background: rgba(0,0,0,0.5); }
.confirm-dialog h2 { margin-bottom: 0.75rem; }
.confirm-dialog p { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1.25rem; }
.dialog-actions { display: flex; gap: 0.75rem; justify-content: flex-end; }

/* ── Pagination ──────────────────────────────────────────────────────────────*/
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  margin: 1.5rem 0;
  flex-wrap: wrap;
}
.page-link {
  color: var(--accent);
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.9rem;
  text-decoration: none;
}
.page-link:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.page-current {
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 700;
  background: var(--accent);
  color: #fff;
}
.page-ellipsis { padding: 0.3rem 0.2rem; color: var(--text-muted); }

/* ── Empty state ─────────────────────────────────────────────────────────────*/
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
}
.empty-icon { font-size: 3rem; margin-bottom: 0.75rem; }
.empty-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 0.4rem; color: var(--text); }
.empty-sub { margin-bottom: 1.25rem; }

/* ── Error page ──────────────────────────────────────────────────────────────*/
.error-page {
  text-align: center;
  padding: 5rem 1rem;
}
.error-code {
  font-size: 6rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}
.error-detail {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* ── Pack detail page ────────────────────────────────────────────────────────*/
.pack-detail { max-width: 800px; }