/* ═══════════════════════════════════════════════════════════════════
   SmartTagAI — Design System v2
   Stripe/Linear aesthetic · 8px grid · Geist + Inter typography
   ═══════════════════════════════════════════════════════════════════ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* ═══════════════════════════════════════════
   DESIGN TOKENS
   ═══════════════════════════════════════════ */
:root {
  /* --- Palette --- */
  --bg-primary:        #f7f8fa;
  --bg-secondary:      #ffffff;
  --bg-tertiary:       #f0f2f5;

  --text-main:         #0f1117;
  --text-secondary:    #4b5563;
  --text-muted:        #9ca3af;
  --text-inverse:      #ffffff;

  --accent-primary:    #1a6cb5;
  --accent-primary-hover: #155a99;
  --accent-primary-subtle: #eef4fb;
  --accent-primary-border: #bcd7f0;

  --accent-green:      #5a9e16;
  --accent-green-hover:#4a8410;
  --accent-green-subtle:#f0f8e6;

  --accent-purple:     #6d28d9;
  --accent-chatgpt:    #10a37f;
  --accent-gemini:     #1a73e8;

  --status-success:    #16a34a;
  --status-warning:    #d97706;
  --status-danger:     #dc2626;
  --status-info:       var(--accent-primary);

  /* --- Borders --- */
  --border-subtle:     #e5e7eb;
  --border-medium:     #d1d5db;
  --border-strong:     #9ca3af;

  /* --- Surfaces --- */
  --surface:           #ffffff;
  --surface-raised:    #ffffff;
  --surface-overlay:   rgba(255, 255, 255, 0.9);

  /* --- Shadows --- */
  --shadow-xs:  0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-sm:  0 1px 3px 0 rgb(0 0 0 / 0.08), 0 1px 2px -1px rgb(0 0 0 / 0.06);
  --shadow-md:  0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg:  0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.05);
  --shadow-xl:  0 20px 25px -5px rgb(0 0 0 / 0.08), 0 8px 10px -6px rgb(0 0 0 / 0.05);
  --shadow-focus: 0 0 0 3px rgba(26, 108, 181, 0.18);

  /* --- Radius --- */
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   14px;
  --radius-xl:   18px;
  --radius-2xl:  24px;
  --radius-pill: 9999px;

  /* --- Typography --- */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', ui-monospace, monospace;

  /* --- Spacing (8px grid) --- */
  --space-1:  4px;
  --space-2:  8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* --- Transitions --- */
  --ease-out-fast:  150ms cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out:       200ms cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring:    300ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* --- Z-index scale --- */
  --z-nav:      100;
  --z-dropdown: 200;
  --z-modal:    300;
  --z-toast:    400;
}

/* ── Dark Mode ── */
[data-theme="dark"] {
  --bg-primary:        #0d0f14;
  --bg-secondary:      #141720;
  --bg-tertiary:       #1a1d27;
  --text-main:         #f1f3f7;
  --text-secondary:    #9ca3af;
  --text-muted:        #6b7280;
  --border-subtle:     #252b38;
  --border-medium:     #2e3444;
  --surface:           #1a1d27;
  --surface-raised:    #1f2333;
  --accent-primary-subtle: #111d2f;
  --accent-primary-border: #1e3a5f;
  --accent-green-subtle: #0d1f05;
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.25);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3);
}

/* ═══════════════════════════════════════════
   RESET & BASE
   ═══════════════════════════════════════════ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  font-feature-settings: 'cv11', 'ss01';
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-main);
  background: var(--bg-primary);
  transition: background var(--ease-out), color var(--ease-out);
}

/* Override Bootstrap blue everywhere */
.btn-primary,
.bg-primary,
.badge.bg-primary { background-color: var(--accent-primary) !important; border-color: var(--accent-primary) !important; }
.text-primary { color: var(--accent-primary) !important; }
.border-primary { border-color: var(--accent-primary) !important; }
.btn-outline-primary { color: var(--accent-primary) !important; border-color: var(--accent-primary) !important; }
.btn-outline-primary:hover { background-color: var(--accent-primary) !important; color: #fff !important; }

/* ═══════════════════════════════════════════
   TYPOGRAPHY
   ═══════════════════════════════════════════ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-main);
}

.tutorial-hero h1, .tutorial-hero p {
  color: white;
}

h1 { font-size: clamp(2rem, 4vw, 3rem);   font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.1rem; }

p { color: var(--text-secondary);  }

.text-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent-primary) 0%, #5b8dee 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ═══════════════════════════════════════════
   LAYOUT
   ═══════════════════════════════════════════ */
.st-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (max-width: 768px) {
  .st-container { padding: 0 var(--space-4); }
}

/* ═══════════════════════════════════════════
   STICKY NAVIGATION — App Layout
   ═══════════════════════════════════════════ */
#stickyHeader {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: var(--surface-overlay, rgba(255,255,255,0.85));
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-xs);
  margin-bottom: 1rem;
}

[data-theme="dark"] #stickyHeader {
  background: rgba(13, 15, 20, 0.88);
}

#topBar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  min-height: 52px;
}

#brandLink {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

#brandName {
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

/* ── Brand Logo Colors ── */
.brand-logo .logo-primary { fill: #1a6cb5; }
.brand-logo .logo-secondary { fill: var(--text-secondary); }
.brand-logo .logo-accent { fill: #6ab023; }

[data-theme="dark"] .brand-logo .logo-primary { fill: #5ba3e0; }
[data-theme="dark"] .brand-logo .logo-secondary { fill: #9ca3af; }
[data-theme="dark"] .brand-logo .logo-accent { fill: #6ab023; }

/* ── Main Nav ── */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0 var(--space-4) var(--space-1);
  border-top: 1px solid var(--border-subtle);
  overflow-x: auto;
  scrollbar-width: none;
}
.main-nav::-webkit-scrollbar { display: none; }

[data-theme="dark"] .main-nav .nav-item { color: #9ca3af; }
[data-theme="dark"] .main-nav .nav-item:hover { background: #1f2333; color: #f1f3f7; }
[data-theme="dark"] .main-nav .nav-item.active { background: #111d2f; color: #5ba3e0; }

.nav-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background var(--ease-out-fast), color var(--ease-out-fast);
  white-space: nowrap;
}

.nav-item:hover {
  background: var(--bg-tertiary);
  color: var(--text-main);
}

.nav-item.active {
  background: var(--accent-primary-subtle);
  color: var(--accent-primary);
  font-weight: 600;
}

/* ── User Area ── */
#userArea {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.user-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-1) var(--space-3);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: background var(--ease-out-fast), color var(--ease-out-fast);
  text-decoration: none;
}

.user-action:hover {
  background: var(--bg-tertiary);
  color: var(--text-main);
}

.logout-btn {
  color: var(--status-danger); /* #dc2626 */
}
.logout-btn:hover {
  color: var(--status-danger);
  background: #fef2f2;
}
[data-theme="dark"] .logout-btn:hover { background: #2d1515 !important; }

/* Usage bar — small linear progress */
#usageBar {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 4px var(--space-2);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: background var(--ease-out-fast);
}
#usageBar:hover { background: var(--bg-tertiary); }

.usage-track {
  width: 48px;
  height: 4px;
  background: var(--border-subtle);
  border-radius: 2px;
  overflow: hidden;
}
.usage-fill {
  height: 100%;
  background: var(--accent-primary);
  border-radius: 2px;
  transition: width 0.4s ease;
}
.usage-fill.warn { background: var(--status-warning); }
.usage-fill.full { background: var(--status-danger); }

/* PRO badge */
.badge-pro-sm {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, #1a6cb5, #2080d0);
  color: #fff;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

/* ── Hamburger (mobile) ── */
#menuToggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 32px;
  height: 32px;
  padding: 4px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--ease-out-fast);
}
#menuToggle:hover { background: var(--bg-tertiary); }
#menuToggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: transform 0.2s, opacity 0.2s;
}
#menuToggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
#menuToggle.open span:nth-child(2) { opacity: 0; }
#menuToggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 768px) {
  #menuToggle { display: flex; }
  .main-nav {
    display: none;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-4) var(--space-3);
    border-top: 1px solid var(--border-subtle);
  }
  .main-nav.open { display: flex; }
  .nav-item { width: 100%; }
}

/* ── Global Search ── */
#globalSearchBar {
  padding: var(--space-2) var(--space-4);
  border-top: 1px solid var(--border-subtle);
}

#globalSearchBar .input-group-text {
  background: var(--bg-primary);
  border-color: var(--border-subtle);
  border-right: none;
}

#globalSearchBar .form-control {
  border-color: var(--border-subtle);
  border-left: none;
  border-right: none;
  background: var(--bg-primary);
  font-size: 0.82rem;
  color: var(--text-main);
}

#globalSearchBar .btn-outline-secondary {
  border-color: var(--border-subtle);
  color: var(--text-muted);
  border-left: none;
}

/* ═══════════════════════════════════════════
   CARDS
   ═══════════════════════════════════════════ */
.st-card {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--ease-out), transform var(--ease-out);
}

.st-card:hover { box-shadow: var(--shadow-md); }

.st-card-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.st-card-body {
  padding: var(--space-5);
}

/* ═══════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════ */
.st-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--ease-out-fast), transform var(--ease-out-fast),
              box-shadow var(--ease-out-fast), border-color var(--ease-out-fast);
  white-space: nowrap;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.st-btn:active { transform: scale(0.97); }
.st-btn:focus-visible { outline: none; box-shadow: var(--shadow-focus); }

/* Variants */
.st-btn-primary {
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
  box-shadow: 0 1px 2px rgba(26, 108, 181, 0.2);
}
.st-btn-primary:hover {
  background: var(--accent-primary-hover);
  border-color: var(--accent-primary-hover);
  box-shadow: 0 3px 8px rgba(26, 108, 181, 0.3);
  color: #fff;
}

.st-btn-secondary {
  background: var(--surface);
  color: var(--text-main);
  border-color: var(--border-medium);
}
.st-btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.st-btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: transparent;
}
.st-btn-ghost:hover { background: var(--bg-tertiary); color: var(--text-main); }

.st-btn-danger {
  background: #fef2f2;
  color: var(--status-danger);
  border-color: #fecaca;
}
.st-btn-danger:hover { background: #fee2e2; border-color: #fca5a5; }

/* Sizes */
.st-btn-sm { padding: 4px var(--space-3); font-size: 0.8rem; border-radius: var(--radius-sm); }
.st-btn-lg { padding: var(--space-3) var(--space-6); font-size: 1rem; border-radius: var(--radius-lg); }


/* ════════════════════════════════════════════
   AUTH PAGES
   ════════════════════════════════════════════ */

.auth-card {
  max-width: 420px; margin: 60px auto;
  background: var(--surface); border-radius: 16px;
  box-shadow: var(--shadow-lg); padding: 2.5rem 2rem; border: 1px solid var(--border);
}
.auth-title { font-size: 1.4rem; font-weight: 700; margin-bottom: .25rem; }
.auth-subtitle { color: var(--text-muted); margin-bottom: 1.5rem; font-size: .9rem; }
.btn-google {
  background: var(--surface); border: 1px solid var(--border); color: var(--text);
  display: flex; align-items: center; justify-content: center; gap: .6rem;
  font-size: .9rem; padding: .55rem 1rem; transition: background .15s; border-radius: var(--radius-sm);
}
.btn-google:hover { background: var(--surface-2); }
.divider { display: flex; align-items: center; gap: .75rem; margin: 1.25rem 0; color: var(--text-faint); font-size: .8rem; }
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.strength-bar { height: 4px; border-radius: 2px; transition: all .3s; background: var(--border); }


/* ════════════════════════════════════════════
   DARK MODE
   ════════════════════════════════════════════ */

[data-theme="dark"] {
  --surface: #1e2128;
  --surface-2: #252830;
  --surface-3: #2d3139;
  --border: #353840;
  --border-strong: #454850;
  --text: #e8eaed;
  --text-muted: #9aa0aa;
  --text-faint: #636870;
  --accent-soft: #1e2d4a;
  --success-soft: #0f2820;
  --warning-soft: #2d2210;
  --danger-soft: #2d1515;
  color-scheme: dark;
}

[data-theme="dark"] .nav-tabs .nav-link { color: #9aa0aa; }
[data-theme="dark"] .nav-tabs .nav-link:hover { background: #2d3139; color: #e8eaed; }
[data-theme="dark"] .nav-tabs .nav-link.active { background: #1e2d4a; color: #60a5fa; }
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select,
[data-theme="dark"] textarea { background: #252830; border-color: #454850; color: #e8eaed; }
[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus { background: #252830; border-color: #3b82f6; box-shadow: 0 0 0 3px rgba(59,130,246,.2); }
[data-theme="dark"] .form-control::placeholder { color: #636870; }
[data-theme="dark"] .input-group-text { background: #2d3139; border-color: #454850; color: #9aa0aa; }
[data-theme="dark"] .card { background: #1e2128; border-color: #353840; color: #e8eaed; }
[data-theme="dark"] .card-header { background: #252830 !important; border-color: #353840; }
[data-theme="dark"] .table { --bs-table-bg: #1e2128; --bs-table-striped-bg: #252830; --bs-table-hover-bg: #2d3139; --bs-table-border-color: #353840; color: #e8eaed; }
[data-theme="dark"] .table th { background: #252830 !important; color: #9aa0aa; }
[data-theme="dark"] .modal-content { background: #1e2128; border-color: #353840; color: #e8eaed; }
[data-theme="dark"] .modal-header, [data-theme="dark"] .modal-footer { border-color: #353840; }
[data-theme="dark"] .list-group-item { background: #1e2128; border-color: #353840; color: #e8eaed; }
[data-theme="dark"] .list-group-flush .list-group-item { background: transparent; }
[data-theme="dark"] .alert-secondary { background: #252830; border-color: #353840; color: #9aa0aa; }
[data-theme="dark"] .alert-light { background: #252830; border-color: #353840; color: #9aa0aa; }
[data-theme="dark"] .alert-info { background: #1a3a4a; border-color: #1e4d70; color: #7dd3fc; }
[data-theme="dark"] .bg-light { background: #252830 !important; }
[data-theme="dark"] .text-muted { color: #9aa0aa !important; }
[data-theme="dark"] .border { border-color: #353840 !important; }
[data-theme="dark"] #globalSearchResults { background: #1e2128; border-color: #353840; }
[data-theme="dark"] .review-paste-bar { background: #1e2128 !important; border-bottom-color: #3b82f6; }
[data-theme="dark"] .tag-card { background: #1e2128; border-color: #353840; }
[data-theme="dark"] .heatmap-cell { background: #2d3139; }
[data-theme="dark"] .heatmap-cell[data-level="1"] { background: #0e4429; }
[data-theme="dark"] .heatmap-cell[data-level="2"] { background: #006d32; }
[data-theme="dark"] .heatmap-cell[data-level="3"] { background: #26a641; }
[data-theme="dark"] .heatmap-cell[data-level="4"] { background: #39d353; }
[data-theme="dark"] .word-chip { background: #2d3139 !important; border-color: #454850 !important; }
[data-theme="dark"] .inactive-tag { background: #2d2210; color: #fbbf24; border-color: #78350f; }
[data-theme="dark"] .skeleton { background: linear-gradient(90deg, #252830 25%, #2d3139 50%, #252830 75%); background-size: 200% 100%; }
[data-theme="dark"] .topic-year-badge { background: #2d3139; color: #9aa0aa; }
[data-theme="dark"] pre, [data-theme="dark"] code { background: #252830; color: #e8a87c; }
[data-theme="dark"] .auth-card { background: #1e2128; border-color: #353840; }
[data-theme="dark"] .btn-google { background: #252830; border-color: #454850; color: #e8eaed; }
[data-theme="dark"] .clickable { background: #252830; }
[data-theme="dark"] .clickable:hover { background: #2d3139; }
[data-theme="dark"] .dark-toggle:hover { background: #2d3139; }
[data-theme="dark"] .compare-table td { color: #9aa0aa; }
[data-theme="dark"] h5 { color: #6ab023; }
[data-theme="dark"] h6, .interactive-demo, .demo-section ul li { color: #9ca3af; }
tag-chip



/* ═══════════════════════════════════════════
   FORM ELEMENTS
   ═══════════════════════════════════════════ */
.st-input,
input[type="text"].form-control,
input[type="email"].form-control,
input[type="password"].form-control,
input[type="date"].form-control,
textarea.form-control {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--text-main);
  background: var(--surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  transition: border-color var(--ease-out-fast), box-shadow var(--ease-out-fast);
  outline: none;
}

.st-input:focus,
input[type="text"].form-control:focus,
input[type="email"].form-control:focus,
input[type="password"].form-control:focus,
textarea.form-control:focus {
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-focus);
}

[data-theme="dark"] .st-input,
[data-theme="dark"] .form-control {
  background: var(--bg-tertiary);
  border-color: var(--border-medium);
  color: var(--text-main);
}

/* ═══════════════════════════════════════════
   BADGE / PILL / STATUS INDICATORS
   ═══════════════════════════════════════════ */
.st-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  font-size: 0.7rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  letter-spacing: 0.03em;
}

.st-badge-blue   { background: var(--accent-primary-subtle); color: var(--accent-primary); border: 1px solid var(--accent-primary-border); }
.st-badge-green  { background: var(--accent-green-subtle);   color: var(--accent-green); border: 1px solid #c3e6a0; }
.st-badge-neutral { background: var(--bg-tertiary); color: var(--text-secondary); border: 1px solid var(--border-subtle); }
.st-badge-warning { background: #fffbeb; color: #92400e; border: 1px solid #fde68a; }
.st-badge-danger  { background: #fef2f2; color: var(--status-danger); border: 1px solid #fecaca; }

/* Status dot */
.st-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}
.st-dot-green { background: var(--accent-green); }
.st-dot-blue  { background: var(--accent-primary); }
.st-dot-amber { background: var(--status-warning); }
.st-dot-red   { background: var(--status-danger); }
.st-dot-grey  { background: var(--border-medium); }

/* ═══════════════════════════════════════════
   CHIPS (Tag selector)
   ═══════════════════════════════════════════ */
.st-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--ease-out-fast), border-color var(--ease-out-fast),
              color var(--ease-out-fast), transform 100ms;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.st-chip:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--accent-primary-subtle);
}

.st-chip:active { transform: scale(0.94); }

.st-chip--active {
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
  font-weight: 600;
}

.st-chip--done {
  opacity: 0.45;
}

/* ═══════════════════════════════════════════
   SKELETON / LOADING
   ═══════════════════════════════════════════ */
.st-skeleton {
  background: linear-gradient(
    90deg,
    var(--border-subtle) 25%,
    var(--bg-tertiary)   50%,
    var(--border-subtle) 75%
  );
  background-size: 200% 100%;
  animation: st-skeleton-shimmer 1.4s ease infinite;
  border-radius: var(--radius-sm);
}

@keyframes st-skeleton-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ═══════════════════════════════════════════
   TOAST NOTIFICATIONS
   ═══════════════════════════════════════════ */
.st-toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: 0.83rem;
  font-weight: 600;
  color: #fff;
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  max-width: 360px;
  animation: st-toast-in 0.2s ease;
}

@keyframes st-toast-in {
  from { opacity: 0; transform: translateY(-8px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ═══════════════════════════════════════════
   STAT CARDS (Dashboard)
   ═══════════════════════════════════════════ */
.st-stat-card {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.st-stat-card .st-stat-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}

.st-stat-card .st-stat-value {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-main);
  line-height: 1;
}

.st-stat-card .st-stat-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: var(--space-1);
}

.st-stat-card .st-stat-indicator {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-pill);
  margin-top: var(--space-2);
}
.st-stat-indicator--up   { background: #f0fdf4; color: #15803d; }
.st-stat-indicator--down { background: #fef2f2; color: #dc2626; }

/* ═══════════════════════════════════════════
   CHART CONTAINER
   ═══════════════════════════════════════════ */
.chart-container {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.chart-container .chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.chart-container .chart-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-main);
}

.chart-container .chart-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 1px;
}

.chart-container canvas,
.chart-container .chart-body {
  max-height: 260px;
}

/* ═══════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════ */
#footer {
  text-align: center;
  padding: var(--space-6) var(--space-4);
  margin-top: var(--space-12);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-muted);
}

[data-theme="dark"] #footer { border-top-color: #252b38 !important; }

/* ═══════════════════════════════════════════
   UTILITIES
   ═══════════════════════════════════════════ */
.fade-in {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Text Scale control (keep functional) ── */
#textScaleWrap { position: relative; display: inline-block; }

/* ── Quick Submit bar cleanup ── */
#quickSubmitBar {
  padding: var(--space-2) var(--space-4) var(--space-3);
  border-top: 1px solid var(--border-subtle);
}

#quickSubmitBar textarea.form-control {
  font-size: 0.82rem;
  min-height: 34px;
}

/* ═══════════════════════════════════════════
   DARK-MODE OVERRIDES for Bootstrap components
   ═══════════════════════════════════════════ */
[data-theme="dark"] .form-control,
[data-theme="dark"] .input-group-text {
  background-color: var(--bg-tertiary);
  border-color: var(--border-medium);
  color: var(--text-main);
}

[data-theme="dark"] .btn-outline-secondary {
  color: var(--text-secondary);
  border-color: var(--border-medium);
}
[data-theme="dark"] .btn-outline-secondary:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-main);
}

[data-theme="dark"] .list-group-item {
  background: var(--surface);
  border-color: var(--border-subtle);
  color: var(--text-main);
}