/* ==========================================================================
   Nest — Design tokens & theme
   ========================================================================== */

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --sidebar-width: 264px;
  --sidebar-width-collapsed: 76px;
  --topbar-height: 72px;

  --transition-fast: 140ms ease;
  --transition-base: 200ms ease;

  /* Light theme */
  --bg: #f7f6f2;
  --bg-elevated: #ffffff;
  --bg-sidebar: #ffffff;
  --bg-hover: #efede7;
  --bg-subtle: #f1efe9;
  --card-bg: #ffffff;
  --border: #ded9cf;
  --border-soft: #e8e3d9;
  --text: #1f1e1a;
  --text-secondary: #68645b;
  --text-tertiary: #9c978a;
  --accent: #f97316;
  --accent-strong: #db6710;
  --accent-soft: #fdecdc;
  --accent-contrast: #ffffff;
  --danger: #dc4a2d;
  --danger-soft: #fbe7e1;
  --warning: #a67c2e;
  --shadow-sm: 0 1px 2px rgba(30, 27, 18, 0.05), 0 1px 1px rgba(30, 27, 18, 0.04);
  --shadow-md: 0 6px 20px rgba(30, 27, 18, 0.07), 0 2px 6px rgba(30, 27, 18, 0.05);
  --shadow-lg: 0 20px 45px rgba(30, 27, 18, 0.14), 0 6px 16px rgba(30, 27, 18, 0.08);
  --focus-ring: 0 0 0 3px rgba(249, 115, 22, 0.35);
  --scrollbar: #d8d2c5;
}

[data-theme="dark"] {
  --bg: #17171a;
  --bg-elevated: #1f1f23;
  --bg-sidebar: #19191c;
  --bg-hover: #2a2a2f;
  --bg-subtle: #232327;
  --card-bg: #201f24;
  --border: #302f35;
  --border-soft: #29282d;
  --text: #eeece7;
  --text-secondary: #a7a49c;
  --text-tertiary: #726f68;
  --accent: #f97316;
  --accent-strong: #ff8c3d;
  --accent-soft: #3a2416;
  --accent-contrast: #ffffff;
  --danger: #dc4a2d;
  --danger-soft: #3a2620;
  --warning: #d0a355;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 24px 50px rgba(0, 0, 0, 0.5);
  --focus-ring: 0 0 0 3px rgba(249, 115, 22, 0.4);
  --scrollbar: #38373d;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   Reset & base
   ========================================================================== */

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  font-size: 17px;
  line-height: 1.5;
}
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; }
a { color: inherit; }
img { max-width: 100%; display: block; }
input, textarea, select, button { font-family: inherit; font-size: inherit; color: inherit; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 10px; border: 2px solid transparent; background-clip: content-box; }

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
.hidden { display: none !important; }

/* Icon-button standard (project-wide):
   - Circular icon buttons (.icon-btn, .btn-icon-circle, .account-avatar-btn): 38px diameter.
   - All icon-only buttons (circular or not, e.g. .card-icon-btn): 18px icon, i.e. plain
     svgIcon(name) with no 'sm'/'lg' modifier. Reserve .icon.sm/.icon.lg for decorative,
     non-button icons (badges, pills, empty states).
   - Hover state (all icon-only buttons, circular or not): NO background fill — only the
     icon color turns accent orange. See .icon-btn:hover / .card-icon-btn:hover. */
svg.icon { display: block; width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
svg.icon.sm { width: 15px; height: 15px; }
svg.icon.lg { width: 24px; height: 24px; }

/* ==========================================================================
   App shell
   ========================================================================== */

.app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ---- Sidebar ---- */
.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
  transition: width var(--transition-base), transform var(--transition-base);
  z-index: 40;
}
.app.sidebar-collapsed .sidebar { width: var(--sidebar-width-collapsed); }

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--topbar-height);
  padding: 0 20px;
  flex-shrink: 0;
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; overflow: hidden; }
.brand-mark {
  width: 34px; height: auto; color: var(--text);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.brand-mark svg { width: 100%; height: auto; display: block; }
.icon-btn.sidebar-close-btn { display: none; }

.sidebar-nav { flex: 1; overflow-y: auto; padding: 4px 12px; }
.nav-list { display: flex; flex-direction: column; gap: 2px; }
.nav-list-bottom { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border-soft); }

.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 12px 9px 9px; border-radius: var(--radius-sm);
  border: none;
  position: relative;
  color: var(--text-secondary); font-weight: 500; font-size: 16px;
  cursor: pointer; background: none; width: 100%; text-align: left;
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap; overflow: hidden;
}
.nav-item svg.icon { color: var(--text-tertiary); }
.nav-item:hover { background: var(--bg-hover); color: var(--text); }
.nav-item.active { background: transparent; color: var(--text); font-weight: 700; }
.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 20px;
  border-radius: var(--radius-pill);
  background: var(--accent);
}
.nav-item.active svg.icon { color: var(--text); }
.nav-item-label { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.nav-item-count {
  font-size: 14px; color: var(--text-tertiary); background: var(--bg-subtle);
  padding: 1px 8px; border-radius: var(--radius-pill); flex-shrink: 0;
}
.nav-item.active .nav-item-count { background: var(--bg-subtle); color: var(--text); }
.app.sidebar-collapsed .nav-item-label,
.app.sidebar-collapsed .nav-item-count,
.app.sidebar-collapsed .nav-section-title { display: none; }
.app.sidebar-collapsed .nav-item { justify-content: center; }
.app.sidebar-collapsed #addCollectionBtn { display: none; }

.nav-section-header { display: flex; align-items: center; justify-content: space-between; padding: 14px 12px 6px; }
.nav-section-title { font-size: 12.5px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-tertiary); }
.nav-section-title-btn { border: none; background: none; padding: 2px 0; cursor: pointer; transition: color var(--transition-fast); }
.nav-section-title-btn:hover { color: var(--accent-strong); }

.collection-dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }

.sidebar-footer { padding: 12px; border-top: 1px solid var(--border-soft); display: flex; justify-content: flex-end; }
#sidebarCollapseBtn svg { transition: transform var(--transition-base); }
.app.sidebar-collapsed #sidebarCollapseBtn svg { transform: rotate(180deg); }
.app.sidebar-collapsed .sidebar-footer { justify-content: center; }

.sidebar-backdrop {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 39;
}

/* ---- Main / Topbar ---- */
.main-wrapper { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.topbar {
  height: var(--topbar-height);
  flex-shrink: 0;
  display: flex; align-items: center; gap: 16px;
  padding: 0 24px;
  background: var(--bg);
}
.topbar-left { display: flex; align-items: center; gap: 12px; min-width: auto; }
.page-title { font-size: 23px; font-weight: 700; letter-spacing: -0.01em; margin: 0; white-space: nowrap; }
.topbar-center { flex: 1; display: flex; justify-content: flex-start; min-width: 0; }
.topbar-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.icon-btn.menu-btn { display: none; }

.search-box {
  position: relative; width: 100%; max-width: 480px;
  display: flex; align-items: center;
}
.search-icon {
  position: absolute; left: 13px; width: 16px; height: 16px;
  background: var(--text-tertiary);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E") center / contain no-repeat;
}
.search-input {
  width: 100%; padding: 10px 36px 10px 38px;
  border-radius: 0; border: none; border-bottom: 1px solid var(--border);
  background: none; color: var(--text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.search-input:focus { border-color: var(--accent); box-shadow: none; }
.search-input::placeholder { color: var(--text-tertiary); }
.search-box:hover .search-icon, .search-box:focus-within .search-icon { background: var(--accent); }
.search-clear {
  position: absolute; right: 8px; width: 22px; height: 22px; border-radius: 50%;
  border: none; background: var(--bg-subtle); color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center; cursor: pointer;
}

.icon-btn {
  width: 38px; height: 38px; border-radius: var(--radius-pill);
  border: 1px solid transparent; background: none; color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  position: relative; flex-shrink: 0;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}
.icon-btn:hover { background: none; color: var(--accent); }
.icon-btn.active { background: none; border-color: transparent; color: var(--accent); }
.icon-btn.active svg.icon { fill: currentColor; }
.icon-btn.icon-btn-danger { color: var(--danger); }
.icon-btn.icon-btn-danger:hover { background: var(--danger); color: var(--accent-contrast); }

.filter-badge {
  position: absolute; top: -4px; right: -4px; min-width: 16px; height: 16px; padding: 0 4px;
  background: var(--accent); color: var(--accent-contrast); border-radius: var(--radius-pill);
  font-size: 11.5px; font-weight: 700; display: flex; align-items: center; justify-content: center;
}


.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px; border-radius: var(--radius-pill); border: 1px solid var(--border);
  background: var(--bg-elevated); color: var(--text); font-weight: 600; font-size: 16px;
  cursor: pointer; transition: all var(--transition-fast); white-space: nowrap;
}
.btn:hover { background: var(--bg-hover); }
.add-item-btn {
  width: 38px; height: 38px; padding: 0; justify-content: center;
}
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-contrast); }
.btn-primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); }
.btn-ghost { background: none; border-color: transparent; }
.btn-ghost:hover { background: var(--bg-hover); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(0.92); }
.btn-block { width: 100%; justify-content: center; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-sm { padding: 6px 12px; font-size: 15px; }
.btn-icon-circle { width: 38px; height: 38px; padding: 0; border-radius: 50%; flex-shrink: 0; justify-content: center; }

/* Auth screen — shared between index.html (login gate) and admin.html */
.auth-screen { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg); padding: 24px; }
.auth-card { width: 100%; max-width: 380px; background: var(--bg-elevated); border: 1px solid var(--border-soft); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-md); }
.auth-card .brand-mark { display: block; width: 40px; height: auto; color: #000; margin: 0 0 14px auto; }
.auth-card h1 { font-size: 21px; margin: 0 0 4px; letter-spacing: -0.01em; }
.auth-card .auth-sub { color: var(--text-secondary); font-size: 14.5px; margin: 0 0 22px; }
.auth-card .form-row:last-of-type { margin-bottom: 18px; }
.auth-error { font-size: 14px; color: var(--danger); margin: 0 0 14px; display: none; }
.auth-error.visible { display: block; }
.auth-loading { display: flex; align-items: center; justify-content: center; min-height: 100vh; color: var(--text-tertiary); font-size: 15px; }
[hidden] { display: none !important; }

/* Admin panel */
.admin-page { max-width: 760px; margin: 0 auto; padding: 40px 24px 80px; }
.admin-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; gap: 12px; }
.admin-header h1 { font-size: 24px; margin: 0; letter-spacing: -0.01em; }
.admin-header .auth-sub { margin: 2px 0 0; }
.admin-card { background: var(--bg-elevated); border: 1px solid var(--border-soft); border-radius: var(--radius-lg); padding: 24px; margin-bottom: 24px; box-shadow: var(--shadow-sm); }
.admin-card h2 { font-size: 16.5px; margin: 0 0 16px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.admin-table th { text-align: left; font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-tertiary); font-weight: 700; padding: 0 10px 10px; border-bottom: 1px solid var(--border-soft); }
.admin-table td { padding: 12px 10px; border-bottom: 1px solid var(--border-soft); vertical-align: middle; }
.admin-table tr:last-child td { border-bottom: none; }
.admin-badge { display: inline-block; font-size: 12.5px; font-weight: 700; padding: 3px 9px; border-radius: var(--radius-pill); background: var(--accent-soft); color: var(--accent-strong); }
.admin-empty { color: var(--text-tertiary); font-size: 15px; padding: 6px 10px; }
.admin-create-row { display: grid; grid-template-columns: 1.3fr 1fr auto auto; gap: 10px; align-items: end; }
.admin-create-row .form-row { margin-bottom: 0; }
.admin-toggle-inline { display: flex; align-items: center; gap: 8px; height: 40px; }

/* Account avatar menu — shared between index.html and admin.html */
.account-menu { position: relative; }
.account-avatar-btn {
  width: 38px; height: 38px; border-radius: var(--radius-pill); border: 1px solid transparent; cursor: pointer;
  background: none; color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  transition: color var(--transition-fast);
}
.account-avatar-btn:hover { background: none; color: var(--accent); }
.account-dropdown {
  position: absolute; top: 46px; right: 0; min-width: 230px; z-index: 60;
  background: var(--bg-elevated); border: 1px solid var(--border-soft); border-radius: var(--radius-md);
  box-shadow: var(--shadow-md); padding: 8px;
}
.account-dropdown-email { padding: 8px 10px 10px; font-size: 13.5px; color: var(--text-tertiary); border-bottom: 1px solid var(--border-soft); margin-bottom: 6px; word-break: break-all; }
.account-dropdown button {
  display: flex; align-items: center; gap: 10px; width: 100%; text-align: left;
  padding: 9px 10px; border-radius: 8px; border: none; background: none;
  color: var(--text); font-size: 15px; font-weight: 600; cursor: pointer;
}
.account-dropdown button:hover { background: var(--bg-hover); }
.account-dropdown button.danger { color: var(--danger); }
.account-users-section { margin-top: 6px; padding-top: 18px; border-top: 1px solid var(--border-soft); }
.account-users-section h3 { font-size: 15px; margin: 0 0 12px; }

/* ---- Filter panel ---- */
.filter-panel {
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg-elevated);
  padding: 18px 24px;
  animation: slideDown var(--transition-base);
}
@keyframes slideDown { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }
.filter-panel-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; }
.filter-group { display: flex; flex-direction: column; gap: 6px; }
.filter-group-check { justify-content: flex-end; }
.filter-label { font-size: 14px; font-weight: 600; color: var(--text-secondary); }
.select-input {
  padding: 8px 10px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: none; color: var(--text);
}
.chip-select { display: flex; flex-wrap: wrap; gap: 6px; }
.chip-toggle {
  padding: 6px 12px; border-radius: var(--radius-pill); border: 1px solid var(--border);
  background: var(--bg); color: var(--text-secondary); font-size: 15px; font-weight: 500; cursor: pointer;
  transition: all var(--transition-fast);
}
.chip-toggle:hover { border-color: var(--accent); }
.chip-toggle.active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-strong); }
.checkbox-label { display: flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 500; cursor: pointer; }
.checkbox-label input { width: 17px; height: 17px; accent-color: var(--accent); cursor: pointer; }
.filter-panel-footer { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; gap: 12px; flex-wrap: wrap; }
.active-filters { display: flex; flex-wrap: wrap; gap: 6px; font-size: 15px; color: var(--text-secondary); }
.active-filter-pill {
  display: inline-flex; align-items: center; gap: 4px; background: var(--accent-soft); color: var(--accent-strong);
  padding: 3px 10px; border-radius: var(--radius-pill); font-size: 14px; font-weight: 600;
}

/* ---- Content area ---- */
.content { flex: 1; overflow-y: auto; padding: 28px 32px 60px; }
.content:focus { outline: none; }

.section-heading { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 16px; }
.section-heading h2 { font-size: 18.5px; font-weight: 700; margin: 0; }
.section-heading .see-all { font-size: 15px; color: var(--accent); font-weight: 600; cursor: pointer; background: none; border: none; }

/* ==========================================================================
   Dashboard
   ========================================================================== */

.dashboard-stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px; margin-bottom: 32px;
}
.stat-card {
  background: var(--card-bg); border: 1px solid var(--border-soft); border-radius: var(--radius-md);
  padding: 18px 20px; box-shadow: var(--shadow-sm); cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.stat-value { font-size: 30px; font-weight: 700; letter-spacing: -0.02em; }
.stat-label { font-size: 15px; color: var(--text-secondary); margin-top: 2px; }

.quick-add-row { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
.quick-add-btn {
  display: flex; align-items: center; gap: 10px; padding: 12px 18px;
  border-radius: var(--radius-md); border: 1px dashed var(--border); background: var(--bg-elevated);
  cursor: pointer; font-weight: 600; font-size: 16px; color: var(--text);
  transition: all var(--transition-fast);
}
.quick-add-btn:hover { border-style: solid; border-color: var(--accent); background: var(--accent-soft); color: var(--accent-strong); }
.quick-add-btn svg { color: var(--accent); }

.dashboard-section { margin-bottom: 34px; }
.dashboard-row-scroll {
  display: grid; grid-auto-flow: column; grid-auto-columns: minmax(240px, 1fr);
  gap: 16px; overflow-x: auto; padding-bottom: 6px;
}

/* ==========================================================================
   Card grid
   ========================================================================== */

/* Masonry: cards stack by content height, not a fixed row grid (mymind-style waterfall).
   Built with real JS column-balancing (each card goes into the shortest column) rather
   than CSS column-count, which leaves uneven gaps when the browser tries to balance
   column heights around large break-inside:avoid items. See renderMasonryInto() in app.js. */
.card-grid.masonry-flex { display: flex; align-items: flex-start; gap: 18px; }
.masonry-column { display: flex; flex-direction: column; gap: 18px; flex: 1 1 0; min-width: 0; }
.card-grid.masonry-flex .item-card { width: 100%; }

.card-grid.density-compact.masonry-flex { gap: 12px; }
.card-grid.density-compact .masonry-column { gap: 12px; }
.card-grid.density-compact .card-body { padding: 13px 14px; gap: 6px; }
.card-grid.density-compact .card-title { font-size: 16px; }
.card-grid.density-compact .card-desc { -webkit-line-clamp: 1; }
.card-grid.density-compact .card-media { aspect-ratio: 16/9; }
.card-grid.density-compact .card-footer { padding: 0 14px 12px; }

/* Column count itself is computed in JS (renderMasonryInto) based on window width + view setting. */

.item-card {
  background: var(--card-bg); border: 1px solid var(--border-soft); border-radius: 0;
  box-shadow: var(--shadow-sm); overflow: hidden; display: flex; flex-direction: column;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  cursor: pointer; position: relative;
}
.item-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--border); }
.item-card:focus-visible { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.item-card.dragging { opacity: 0.4; }
.item-card.drag-over { outline: 2px dashed var(--accent); outline-offset: -4px; }

.card-color-bar { height: 4px; width: 100%; flex-shrink: 0; }

.card-media { position: relative; width: 100%; aspect-ratio: 16/9; background: var(--bg-subtle); overflow: hidden; flex-shrink: 0; }
.card-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card-media-fallback { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; color: var(--text-tertiary); }
.card-media-fallback svg { width: 32px; height: 32px; }

.card-cover {
  width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
  position: relative; color: rgba(255,255,255,0.92);
}
[data-theme="dark"] .card-cover { filter: brightness(0.62) saturate(0.9); }
.card-cover .cover-icon { width: 34%; height: 34%; opacity: 0.9; }
.card-cover .cover-icon svg { width: 100%; height: 100%; stroke-width: 1.4; }
.card-cover .cover-letter { font-size: 40%; font-weight: 700; letter-spacing: -0.02em; text-transform: uppercase; }
.card-cover .cover-badge {
  position: absolute; top: 10px; right: 10px; width: 26px; height: 26px; border-radius: 50%;
  background: rgba(255,255,255,0.22); backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center;
}
.card-cover .cover-badge svg { width: 14px; height: 14px; }
.card-grid.view-list .card-cover .cover-icon { width: 30%; height: 30%; }
.card-grid.view-list .card-cover .cover-letter { font-size: 34%; }

.card-body { padding: 16px 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }

/* To-do tiles: no cover photo, compact height (same column width as every other tile) */
.item-card[data-type="todo"] .card-body { padding: 12px 14px; gap: 6px; }
.item-card[data-type="todo"] .card-title { font-size: 16px; }
.item-card[data-type="todo"] .card-footer { padding: 0 14px 12px; }
.card-top-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.card-title-group { display: flex; align-items: center; gap: 8px; min-width: 0; }
.card-title { font-size: 18px; font-weight: 700; letter-spacing: -0.01em; margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-domain { font-size: 14px; color: var(--text-tertiary); display: flex; align-items: center; gap: 5px; }
.card-favicon { width: 14px; height: 14px; border-radius: 3px; flex-shrink: 0; }
.card-desc { font-size: 15.5px; color: var(--text-secondary); overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; line-height: 1.45; margin: 0; }

.card-preview-text {
  font-size: 15px; color: var(--text-secondary); background: none;
  border-radius: var(--radius-sm); padding: 10px 12px; overflow: hidden;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; line-height: 1.5;
}
.card-preview-code {
  font-family: var(--font-mono); font-size: 14.5px; color: var(--text-secondary); background: none;
  border-radius: var(--radius-sm); padding: 10px 12px; overflow: hidden; white-space: pre;
  max-height: 74px; line-height: 1.5;
}

.lang-badge {
  display: inline-flex; align-items: center; padding: 2px 9px; border-radius: var(--radius-pill);
  background: none; border: none; color: var(--accent-strong); font-size: 12.5px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.03em; width: fit-content;
}

.tag-pill {
  font-size: 13px; font-weight: 600; padding: 3px 10px; border-radius: var(--radius-pill);
  background: none; color: var(--text-secondary); border: 1px solid var(--border-soft);
  white-space: nowrap;
}
.tag-pill mark, .card-title mark, .card-desc mark, .card-preview-text mark, .card-preview-code mark {
  background: rgba(214, 178, 79, 0.45); color: inherit; border-radius: 2px; padding: 0 1px;
}

.card-footer { display: flex; align-items: center; justify-content: space-between; padding: 0 18px 16px; margin-top: auto; }
.card-actions-left { display: flex; align-items: center; gap: 4px; }
.card-actions-right { display: flex; align-items: center; gap: 4px; opacity: 0; transition: opacity var(--transition-fast); }
.item-card:hover .card-actions-right, .item-card:focus-within .card-actions-right { opacity: 1; }
@media (hover: none) { .card-actions-right { opacity: 1; } }

.card-icon-btn {
  width: 32px; height: 32px; border-radius: var(--radius-sm); border: none; background: none;
  color: var(--text-tertiary); display: flex; align-items: center; justify-content: center; cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.card-icon-btn:hover { background: none; color: var(--accent); }
.card-icon-btn.is-favorite { color: var(--accent); }
.card-icon-btn.is-favorite svg { fill: currentColor; }
.card-icon-btn.is-pinned { color: var(--accent); }
.card-icon-btn.is-pinned svg { fill: currentColor; }

.collection-tag-row { display: flex; flex-wrap: wrap; gap: 6px; }
.collection-pill { display: inline-flex; align-items: center; gap: 5px; font-size: 13px; font-weight: 600; color: var(--text-secondary); }

/* List view */
.card-grid.view-list .item-card { flex-direction: row; align-items: stretch; }
.card-grid.view-list .card-media { width: 140px; aspect-ratio: auto; flex-shrink: 0; }
.card-grid.view-list .card-color-bar { width: 4px; height: auto; }
.card-grid.view-list .card-body { flex-direction: row; align-items: center; flex-wrap: wrap; gap: 16px; padding: 14px 18px; }
.card-grid.view-list .card-top-row { flex: 1; min-width: 220px; }
.card-grid.view-list .card-desc { display: none; }
.card-grid.view-list .card-preview-text, .card-grid.view-list .card-preview-code { display: none; }
.card-grid.view-list .card-footer { padding: 14px 18px; margin-top: 0; }

/* Overflow menu */
.overflow-menu-wrap { position: relative; }
.overflow-menu {
  position: absolute; right: 0; top: calc(100% + 4px); min-width: 180px;
  background: var(--bg-elevated); border: 1px solid var(--border-soft); border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg); padding: 6px; z-index: 30;
}
.overflow-menu-item {
  display: flex; align-items: center; gap: 10px; width: 100%; padding: 9px 10px; border-radius: 8px;
  border: none; background: none; color: var(--text); font-size: 15.5px; font-weight: 500; cursor: pointer; text-align: left;
}
.overflow-menu-item:hover { background: var(--bg-hover); }
.overflow-menu-item.danger { color: var(--danger); }
.overflow-menu-item svg { color: var(--text-tertiary); }
.overflow-menu-item.danger svg { color: var(--danger); }
.overflow-menu-item.active { color: var(--accent-strong); font-weight: 600; }
.overflow-menu-divider { height: 1px; background: var(--border-soft); margin: 6px 4px; }

/* ==========================================================================
   Empty states
   ========================================================================== */

.empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
  padding: 70px 24px; color: var(--text-secondary);
}
.empty-state-icon {
  width: 64px; height: 64px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-strong);
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.empty-state-icon svg { width: 28px; height: 28px; }
.empty-state h3 { font-size: 19.5px; margin: 0 0 6px; color: var(--text); }
.empty-state p { margin: 0 0 20px; max-width: 340px; font-size: 16px; }

/* ==========================================================================
   Modals
   ========================================================================== */

.modal-overlay {
  position: fixed; inset: 0; background: rgba(20, 18, 14, 0.5); backdrop-filter: blur(2px);
  display: flex; align-items: flex-start; justify-content: center; padding: 5vh 20px;
  z-index: 100; overflow-y: auto;
  animation: fadeIn var(--transition-base);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal-container {
  background: var(--bg-elevated); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  width: 100%; max-width: 560px; max-height: 90vh; display: flex; flex-direction: column;
  animation: modalIn var(--transition-base);
}
.modal-container.modal-lg { max-width: 720px; }
.modal-container.modal-sm { max-width: 420px; }
@keyframes modalIn { from { opacity: 0; transform: translateY(10px) scale(0.98); } to { opacity: 1; transform: translateY(0) scale(1); } }

.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 22px 24px 0; flex-shrink: 0; }
.modal-header h2 { font-size: 20.5px; margin: 0; font-weight: 700; }
.modal-body { padding: 18px 24px; overflow-y: auto; }
.modal-footer { display: flex; align-items: center; justify-content: flex-end; gap: 10px; padding: 16px 24px 24px; flex-shrink: 0; }
.modal-footer.footer-split { justify-content: space-between; }

.form-row { margin-bottom: 16px; }
.form-row:last-child { margin-bottom: 0; }
.form-label { display: block; font-size: 15px; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.form-label .req { color: var(--danger); }
.form-hint { font-size: 14px; color: var(--text-tertiary); margin-top: 5px; }
.form-error { font-size: 14px; color: var(--danger); margin-top: 5px; display: none; }
.form-row.has-error .form-error { display: block; }
.form-row.has-error .text-input, .form-row.has-error textarea { border-color: var(--danger); }

.text-input, textarea.text-input {
  width: 100%; padding: 10px 13px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: none; color: var(--text); resize: vertical; transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.text-input:focus { border-color: var(--accent); box-shadow: var(--focus-ring); }
textarea.text-input { min-height: 90px; line-height: 1.55; }
textarea.mono { font-family: var(--font-mono); font-size: 15px; min-height: 180px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.type-picker { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.type-picker-btn {
  display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 22px 14px;
  border-radius: var(--radius-md); border: 1px solid var(--border); background: var(--bg);
  cursor: pointer; transition: all var(--transition-fast); font-weight: 600; color: var(--text);
}
.type-picker-btn:hover { border-color: var(--accent); background: var(--accent-soft); color: var(--accent-strong); }
.type-picker-btn svg { width: 26px; height: 26px; }

.collection-check-list { display: flex; flex-direction: column; gap: 2px; max-height: 160px; overflow-y: auto; border: 1px solid var(--border-soft); border-radius: var(--radius-sm); padding: 6px; }
.collection-check-item { display: flex; align-items: center; gap: 10px; padding: 7px 8px; border-radius: 7px; cursor: pointer; }
.collection-check-item:hover { background: var(--bg-hover); }
.collection-check-item input { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }

.color-swatch-row { display: flex; gap: 8px; flex-wrap: wrap; }
.color-swatch { width: 30px; height: 30px; border-radius: 50%; cursor: pointer; border: 2px solid transparent; display: flex; align-items: center; justify-content: center; }
.color-swatch.selected { border-color: var(--text); }
.color-swatch.none { background: var(--bg-subtle); border: 1px dashed var(--border); }

.toggle-row { display: flex; align-items: center; justify-content: space-between; padding: 4px 0; }
.switch { position: relative; width: 42px; height: 24px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch-track { position: absolute; inset: 0; background: var(--bg-subtle); border: 1px solid var(--border); border-radius: var(--radius-pill); cursor: pointer; transition: background var(--transition-fast); }
.switch-track::before { content: ""; position: absolute; width: 18px; height: 18px; left: 2px; top: 2px; background: #fff; border-radius: 50%; transition: transform var(--transition-fast); box-shadow: var(--shadow-sm); }
.switch input:checked + .switch-track { background: var(--accent); border-color: var(--accent); }
.switch input:checked + .switch-track::before { transform: translateX(18px); }
.switch input:focus-visible + .switch-track { box-shadow: var(--focus-ring); }

/* Detail modal */
.detail-title { font-size: 24px; font-weight: 700; margin: 4px 0 10px; letter-spacing: -0.01em; }
.detail-meta { font-size: 14.5px; color: var(--text-tertiary); margin-bottom: 16px; }
.detail-section { margin-bottom: 18px; }
.detail-section-label { font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-tertiary); margin-bottom: 8px; }
.detail-text { font-size: 16.5px; line-height: 1.7; white-space: pre-wrap; color: var(--text); }
.detail-code { font-family: var(--font-mono); font-size: 15px; line-height: 1.65; white-space: pre; overflow-x: auto; background: var(--bg-subtle); border-radius: var(--radius-sm); padding: 16px; }
/* Full-bleed section: no background box, just a rule above/below spanning edge-to-edge of the modal */
.detail-bleed-section { margin: 14px -24px; padding: 14px 24px; border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }
.detail-link-preview { display: flex; gap: 12px; align-items: center; }
.detail-link-preview img { width: 44px; height: 44px; border-radius: 8px; object-fit: cover; }
.detail-link-url { font-size: 15px; color: var(--accent); word-break: break-all; }
.detail-actions { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.detail-actions-secondary { display: flex; align-items: center; gap: 4px; margin-left: auto; }

/* Confirm dialog */
.confirm-icon { width: 46px; height: 46px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; background: var(--danger-soft); color: var(--danger); }
.confirm-icon.neutral { background: var(--accent-soft); color: var(--accent-strong); }
.confirm-message { font-size: 16px; color: var(--text-secondary); line-height: 1.55; }

/* Collections manager */
.collection-manage-row { display: flex; align-items: center; gap: 10px; padding: 10px 8px; border-bottom: 1px solid var(--border-soft); }
.collection-manage-row:last-child { border-bottom: none; }
.collection-manage-row input.text-input { flex: 1; padding: 7px 10px; }
.collection-manage-count { font-size: 14px; color: var(--text-tertiary); white-space: nowrap; }
.add-collection-row { display: flex; gap: 8px; margin-top: 14px; }

/* ==========================================================================
   Toasts
   ========================================================================== */

.toast-container {
  position: fixed; bottom: 24px; right: 24px; display: flex; flex-direction: column; gap: 10px; z-index: 200;
  max-width: 340px;
}
.toast {
  display: flex; align-items: center; gap: 10px; background: var(--bg-elevated); color: var(--text);
  border: 1px solid var(--border-soft); border-radius: var(--radius-sm); padding: 12px 16px;
  box-shadow: var(--shadow-lg); font-size: 15.5px; font-weight: 500;
  animation: toastIn var(--transition-base);
}
.toast.leaving { animation: toastOut var(--transition-base) forwards; }
@keyframes toastIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toastOut { to { opacity: 0; transform: translateY(8px); } }
.toast-icon { width: 20px; height: 20px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-strong); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.toast-icon svg { width: 12px; height: 12px; }
.toast.toast-danger .toast-icon { background: var(--danger-soft); color: var(--danger); }

/* ==========================================================================
   Settings page
   ========================================================================== */

.settings-grid { display: grid; gap: 20px; max-width: 640px; }
.settings-card { background: var(--card-bg); border: 1px solid var(--border-soft); border-radius: var(--radius-md); padding: 20px 22px; box-shadow: var(--shadow-sm); }
.settings-card h3 { font-size: 16.5px; margin: 0 0 14px; }
.settings-card .form-row:last-child { margin-bottom: 0; }
.settings-danger-zone { border-color: var(--danger); }
.settings-danger-zone h3 { color: var(--danger); }
.segmented { display: flex; background: var(--bg-subtle); border-radius: var(--radius-sm); padding: 3px; gap: 2px; width: fit-content; }
.segmented button { padding: 7px 14px; border-radius: 7px; border: none; background: none; font-weight: 600; font-size: 15px; color: var(--text-secondary); cursor: pointer; }
.segmented button.active { background: var(--bg-elevated); color: var(--accent-strong); box-shadow: var(--shadow-sm); }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .sidebar { position: fixed; top: 0; bottom: 0; left: 0; transform: translateX(-100%); box-shadow: var(--shadow-lg); }
  .app.sidebar-collapsed .sidebar { width: var(--sidebar-width); }
  .app.mobile-nav-open .sidebar { transform: translateX(0); }
  .app.mobile-nav-open .sidebar-backdrop { display: block; }
  .app.mobile-nav-open .icon-btn.menu-btn { visibility: hidden; }
  .icon-btn.sidebar-close-btn { display: flex; }
  #sidebarCollapseBtn { display: none; }
  .icon-btn.menu-btn { display: flex; }
  .topbar-left { min-width: auto; }
  .add-item-btn { padding: 9px 12px; }
}

@media (max-width: 900px) {
  .topbar { padding: 0 16px; gap: 10px; }
  .content { padding: 20px 16px 60px; }
  .filter-panel { padding: 16px; }
}

@media (max-width: 720px) {
  .topbar { flex-wrap: nowrap; }
  .page-title { display: none; }
  .topbar-center { order: 1; }
  .card-grid.masonry-flex { gap: 12px; }
  .card-grid.masonry-flex .masonry-column { gap: 12px; }
  .card-grid.view-list .item-card { flex-direction: column; }
  .card-grid.view-list .card-media { width: 100%; aspect-ratio: 16/9; }
  .dashboard-stats { grid-template-columns: repeat(2, 1fr); }
  .modal-overlay { padding: 0; align-items: stretch; }
  .modal-container { max-width: 100%; max-height: 100vh; height: 100%; border-radius: 0; }
  .type-picker { grid-template-columns: 1fr 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .toast-container { left: 16px; right: 16px; bottom: 16px; max-width: none; }
  .card-actions-right { opacity: 1; }
}

@media (max-width: 480px) {
  /* handled by renderMasonryInto()'s responsive column-count logic */
}

@media (max-width: 600px) {
  .topbar { height: auto; flex-wrap: wrap; row-gap: 10px; padding: 10px 16px; }
  .topbar-left { min-width: auto; }
  .topbar-right { margin-left: auto; }
  .topbar-center { order: 3; flex: 1 1 100%; }
  .search-box { max-width: none; }
  .dashboard-stats { grid-template-columns: 1fr 1fr; }
  .admin-create-row { grid-template-columns: 1fr; }
  .admin-page { padding: 24px 16px 60px; }
  .admin-header { flex-wrap: wrap; gap: 12px; }
  .admin-table { display: block; overflow-x: auto; white-space: nowrap; }
  .account-dropdown { max-width: calc(100vw - 32px); }
  .auth-card { padding: 24px; }
  .card-grid.masonry-flex { gap: 0; margin: 0 -16px; }
  .card-grid.masonry-flex .masonry-column { gap: 16px; }
  .card-grid.masonry-flex .item-card { border-left: none; border-right: none; }
}