/* NurseIQ Design System */
:root {
  --color-primary: #1d2951;
  --color-accent: #00c9a7;
  --color-highlight: #ff6b6b;
  --color-background: #f8f9ff;
  --color-surface: #ffffff;
  --color-border: #e2e6f0;
  --color-text-primary: #1a1a2a;
  --color-text-secondary: #6b7280;
  --color-success: #00c9a7;
  --color-warning: #ffd166;
  --color-danger: #ff6b6b;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition: 200ms ease;
}

[data-theme="dark"] {
  --color-primary: #6c63ff;
  --color-accent: #00d4aa;
  --color-highlight: #ff6b6b;
  --color-background: #0e0e1a;
  --color-surface: #1a1a2e;
  --color-border: #2a2a45;
  --color-text-primary: #e8e8f0;
  --color-text-secondary: #9ca3af;
  --color-success: #00d4aa;
  --color-warning: #ffb347;
  --color-danger: #ff6b6b;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--color-background);
  color: var(--color-text-primary);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  min-height: 100vh;
}

/* Typography */
h1 { font-size: 2rem; font-weight: 800; color: var(--color-primary); letter-spacing: -0.03em; }
h2 { font-size: 1.6rem; font-weight: 800; color: var(--color-primary); letter-spacing: -0.025em; }
h3 { font-size: 1.2rem; font-weight: 700; color: var(--color-text-primary); letter-spacing: -0.01em; }
h4 { font-size: 1rem; font-weight: 700; }
p  { color: var(--color-text-secondary); }
a  { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }
.page-wrap { padding: 2rem 0; }

/* Navbar */
.navbar {
  background: var(--color-primary);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}
.navbar-brand {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.5px;
}
.navbar-brand span { color: var(--color-accent); }
.navbar-nav { display: flex; align-items: center; gap: 0.25rem; }
.navbar-nav a {
  color: rgba(255,255,255,0.8);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}
.navbar-nav a:hover, .navbar-nav a.active {
  color: #fff;
  background: rgba(255,255,255,0.12);
  text-decoration: none;
}
.navbar-actions { display: flex; align-items: center; gap: 0.75rem; }

/* Toggle switch */
.toggle-switch { position: relative; display: inline-block; width: 48px; height: 26px; flex-shrink: 0; cursor: pointer; }
.toggle-switch input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-track { position: absolute; inset: 0; background: var(--color-border); border-radius: 99px; transition: background 0.2s; }
.toggle-thumb { position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; background: #fff; border-radius: 50%; transition: transform 0.2s; box-shadow: 0 1px 4px rgba(0,0,0,0.2); }
.toggle-switch input:checked + .toggle-track { background: var(--color-accent); }
.toggle-switch input:checked + .toggle-track .toggle-thumb { transform: translateX(22px); }

/* Hamburger button — always visible in app nav */
.hamburger-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.12);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}
.hamburger-btn span {
  display: block;
  width: 18px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.2s;
}
.hamburger-btn.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger-btn.open span:nth-child(2) { opacity: 0; }
.hamburger-btn.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Sidebar overlay (mobile) */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 149;
}
.sidebar-overlay.visible { display: block; }

/* Theme toggle */
.theme-toggle {
  background: rgba(255,255,255,0.12);
  border: none;
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: background var(--transition);
}
.theme-toggle:hover { background: rgba(255,255,255,0.22); }

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 4px 14px rgba(0,0,0,0.05);
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.07), 0 10px 28px rgba(0,0,0,0.07); transform: translateY(-1px); }
.card-title { font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; }
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

/* Weak spot card */
.weak-spot-card {
  border-left: 4px solid var(--color-danger);
  background: rgba(255, 107, 107, 0.04);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.62rem 1.3rem;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary { background: linear-gradient(135deg, #1d2951 0%, #2d3f7a 100%); color: #fff; }
.btn-primary:hover { opacity: 0.9; color: #fff; text-decoration: none; transform: translateY(-1px); }
.btn-accent { background: linear-gradient(135deg, #00c9a7 0%, #00a08a 100%); color: #fff; }
.btn-accent:hover { opacity: 0.9; color: #fff; text-decoration: none; transform: translateY(-1px); }
.btn-danger { background: linear-gradient(135deg, #ff6b6b 0%, #e74c3c 100%); color: #fff; }
.btn-danger:hover { opacity: 0.9; color: #fff; text-decoration: none; }
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-border);
}
.btn-outline:hover { border-color: var(--color-primary); background: rgba(29,41,81,0.04); text-decoration: none; }
[data-theme="dark"] .btn-outline:hover { background: rgba(255,255,255,0.06); }
.btn-sm { padding: 0.38rem 0.85rem; font-size: 0.82rem; }
.btn-lg { padding: 0.85rem 1.75rem; font-size: 1rem; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none !important; }

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 0.4rem;
}
.form-control {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--transition);
}
.form-control:focus { outline: none; border-color: var(--color-accent); }
.form-control::placeholder { color: var(--color-text-secondary); }
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 100px; }

/* Progress bars */
.progress { background: var(--color-border); border-radius: 99px; height: 8px; overflow: hidden; }
.progress-bar {
  height: 100%;
  background: var(--color-accent);
  border-radius: 99px;
  transition: width 0.6s ease;
}
.progress-bar.danger { background: var(--color-danger); }
.progress-bar.warning { background: var(--color-warning); }

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-accent { background: rgba(0,201,167,0.15); color: var(--color-accent); }
.badge-danger { background: rgba(255,107,107,0.15); color: var(--color-danger); }
.badge-warning { background: rgba(255,209,102,0.20); color: #b38600; }
.badge-primary { background: rgba(29,41,81,0.12); color: var(--color-primary); }

/* Alerts */
.alert {
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.alert-success { background: rgba(0,201,167,0.12); color: #007a63; border: 1px solid rgba(0,201,167,0.3); }
.alert-danger  { background: rgba(255,107,107,0.12); color: #c0392b; border: 1px solid rgba(255,107,107,0.3); }
.alert-warning { background: rgba(255,209,102,0.15); color: #856404; border: 1px solid rgba(255,209,102,0.4); }
.alert-info    { background: rgba(29,41,81,0.08); color: var(--color-primary); border: 1px solid rgba(29,41,81,0.15); }

/* Upgrade banner */
.upgrade-banner {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.upgrade-banner p { color: rgba(255,255,255,0.85); margin: 0; }

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.25rem 1.1rem;
  text-align: center;
  position: relative; overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 4px 12px rgba(0,0,0,0.04);
}
.stat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
}
.stat-value { font-size: 2rem; font-weight: 800; color: var(--color-primary); line-height: 1; letter-spacing: -0.03em; }
.stat-label { font-size: 0.78rem; color: var(--color-text-secondary); margin-top: 0.3rem; font-weight: 500; }

/* Streak flame */
.streak-flame { font-size: 1.5rem; }
.streak-count { font-size: 1.75rem; font-weight: 700; color: #f97316; }

/* Quiz answer feedback */
.answer-correct { animation: flashGreen 0.4s ease; }
.answer-wrong   { animation: flashRed 0.4s ease; }
@keyframes flashGreen { 0%,100% { background: var(--color-surface); } 50% { background: rgba(0,201,167,0.2); } }
@keyframes flashRed   { 0%,100% { background: var(--color-surface); } 50% { background: rgba(255,107,107,0.2); } }

.rationale-panel {
  background: rgba(0,201,167,0.08);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 0.9rem 1rem;
  margin-top: 0.75rem;
  font-size: 0.9rem;
  display: none;
}
.rationale-panel.wrong {
  background: rgba(255,107,107,0.08);
  border-color: var(--color-danger);
}
.rationale-panel.show { display: block; animation: slideDown 0.25s ease; }
@keyframes slideDown { from { opacity:0; transform:translateY(-6px); } to { opacity:1; transform:none; } }

/* Simulation */
.sim-card { background: #1a1a2e; border-radius: var(--radius-lg); padding: 1.5rem; color: #e8e8f0; }
.sim-vitals {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 0.75rem;
  margin: 1rem 0;
}
.vital-item { text-align: center; }
.vital-label { font-size: 0.7rem; color: #9ca3af; text-transform: uppercase; letter-spacing: 0.05em; }
.vital-value { font-size: 1.1rem; font-weight: 700; color: var(--color-accent); }

/* Exam countdown */
.exam-card-urgent { border-color: var(--color-warning); }
.days-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.8rem;
  border-radius: 99px;
  font-weight: 700;
  font-size: 0.85rem;
}
.days-badge.urgent { background: rgba(255,209,102,0.2); color: #b38600; }
.days-badge.soon   { background: rgba(255,107,107,0.15); color: var(--color-danger); }
.days-badge.ok     { background: rgba(0,201,167,0.12); color: var(--color-accent); }

/* Concept map canvas */
.concept-map-canvas {
  width: 100%;
  height: 520px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #1a1a2e;
  overflow: hidden;
  position: relative;
}

/* Tabs */
.tabs { display: flex; gap: 0.25rem; border-bottom: 2px solid var(--color-border); margin-bottom: 1.5rem; }
.tab-btn {
  padding: 0.6rem 1.1rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  margin-bottom: -2px;
  transition: all var(--transition);
}
.tab-btn.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Modal */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 520px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  transform: translateY(12px);
  transition: transform var(--transition);
}
.modal-overlay.open .modal { transform: none; }
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; }
.modal-close { background: none; border: none; font-size: 1.4rem; cursor: pointer; color: var(--color-text-secondary); }

/* Loading spinner */
.spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 2rem auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Section header */
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; }
.section-header h2 { margin: 0; }

/* Empty state */
.empty-state { text-align: center; padding: 3rem 1rem; color: var(--color-text-secondary); grid-column: 1 / -1; }
.empty-state-icon { font-size: 3rem; margin-bottom: 0.75rem; }

/* Page header */
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 0.75rem; }
.page-header h2 { margin: 0; }

/* Filter toolbar */
.filter-bar { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 12px; padding: 0.7rem 1.1rem; margin-bottom: 1.25rem; box-shadow: 0 1px 4px rgba(0,0,0,0.04); }
.filter-bar-left { display: flex; align-items: center; gap: 0.5rem; }
.filter-bar label { font-size: 0.82rem; font-weight: 600; color: var(--color-text-secondary); white-space: nowrap; }

/* Flashcard flip */
.flashcard {
  perspective: 1000px;
  cursor: pointer;
  height: 200px;
}
.flashcard-inner {
  position: relative; width: 100%; height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.5s ease;
}
.flashcard.flipped .flashcard-inner { transform: rotateY(180deg); }
.flashcard-front, .flashcard-back {
  position: absolute; width: 100%; height: 100%;
  backface-visibility: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem;
  text-align: center;
  font-weight: 600;
  font-size: 1.05rem;
}
.flashcard-back {
  transform: rotateY(180deg);
  background: var(--color-primary);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 400;
  text-align: left;
  align-items: flex-start;
  overflow-y: auto;
}

/* Onboarding steps */
.onboarding-steps { display: flex; gap: 0.5rem; margin-bottom: 2rem; }
.step-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--color-border);
  transition: background var(--transition);
}
.step-dot.active { background: var(--color-accent); }
.step-dot.done   { background: var(--color-primary); }

/* Pricing cards */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}
.pricing-card {
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  position: relative;
}
.pricing-card.featured {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(0,201,167,0.12);
}
.pricing-card .price { font-size: 2.25rem; font-weight: 700; color: var(--color-primary); }
.pricing-card .price-period { font-size: 0.85rem; color: var(--color-text-secondary); }
.pricing-card .features { list-style: none; margin: 1rem 0 1.5rem; text-align: left; }
.pricing-card .features li { padding: 0.3rem 0; font-size: 0.9rem; }
.pricing-card .features li::before { content: "✓ "; color: var(--color-accent); font-weight: 700; }
.best-value {
  position: absolute;
  top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 99px;
  white-space: nowrap;
}

/* Auth pages */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 2rem; }
.auth-card { background: var(--color-surface); border-radius: var(--radius-lg); padding: 2.5rem; max-width: 420px; width: 100%; box-shadow: var(--shadow-lg); }
.auth-logo { font-size: 1.8rem; font-weight: 700; color: var(--color-primary); text-align: center; margin-bottom: 0.25rem; }
.auth-logo span { color: var(--color-accent); }
.auth-tagline { text-align: center; color: var(--color-text-secondary); font-size: 0.875rem; margin-bottom: 2rem; }
.auth-divider { display: flex; align-items: center; gap: 1rem; margin: 1.25rem 0; color: var(--color-text-secondary); font-size: 0.85rem; }
.auth-divider::before, .auth-divider::after { content: ''; flex: 1; height: 1px; background: var(--color-border); }

/* Dashboard sidebar + main */
.app-layout { display: block; min-height: calc(100vh - 60px); }
.sidebar {
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: 1.5rem 0;
  position: fixed;
  top: 60px;
  left: 0;
  width: 240px;
  height: calc(100vh - 60px);
  overflow-y: auto;
  z-index: 150;
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  box-shadow: var(--shadow-lg);
}
.sidebar.sidebar-open { transform: translateX(0); }
.main-content {
  width: 100%;
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
  padding: 2rem 2.5rem;
  overflow-x: hidden;
  box-sizing: border-box;
}
/* Auto-center any inline max-width element inside main content */
.main-content [style*="max-width:"] {
  margin-left: auto;
  margin-right: auto;
}
.sidebar-section { margin-bottom: 0.5rem; }
.sidebar-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  padding: 0.25rem 1.25rem;
  margin-top: 0.75rem;
}
.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1.25rem;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  border-right: 3px solid transparent;
  transition: all var(--transition);
}
.sidebar-link:hover { color: var(--color-primary); background: rgba(29,41,81,0.05); text-decoration: none; }
.sidebar-link.active { color: var(--color-primary); border-right-color: var(--color-primary); background: rgba(29,41,81,0.06); font-weight: 600; }
.sidebar-link .icon { font-size: 1.05rem; width: 20px; text-align: center; }
/* Responsive */
@media (max-width: 768px) {
  .main-content { padding: 1.25rem; }
  .card-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; }
}

/* ===== GLOBAL VISUAL POLISH ===== */

/* Navbar: richer gradient */
.navbar {
  background: linear-gradient(120deg, #141e3f 0%, #1d2951 50%, #1a3060 100%);
  box-shadow: 0 2px 24px rgba(0,0,0,0.28);
  border-bottom: 1px solid rgba(0,201,167,0.2);
}
.navbar-brand { font-size: 1.45rem; font-weight: 800; letter-spacing: -0.03em; }

/* ── SIDEBAR: polished light style ────────────────────────────────────────── */
.sidebar {
  background: #fff;
  border-right: 1px solid #e5e9f7;
  box-shadow: 2px 0 16px rgba(29,41,81,0.07);
}
[data-theme="dark"] .sidebar {
  background: var(--color-surface);
  border-right-color: var(--color-border);
}

.sidebar-label {
  color: #8892b0;
  border-top-color: #e5e9f7;
  font-size: 0.65rem;
  letter-spacing: 0.09em;
  font-weight: 800;
}

.sidebar-link {
  color: #3d4a6b;
  border-left: 3px solid transparent;
  border-right: none;
  border-radius: 0 8px 8px 0;
  margin-right: 0.75rem;
  transition: all 0.15s;
}
.sidebar-link:hover {
  background: rgba(29,41,81,0.05) !important;
  color: #1d2951 !important;
  border-left-color: rgba(0,201,167,0.4) !important;
  text-decoration: none;
}
.sidebar-link.active {
  background: linear-gradient(90deg, rgba(0,201,167,0.12), rgba(29,41,81,0.04)) !important;
  color: #1d2951 !important;
  border-left-color: #00c9a7 !important;
  border-right: none !important;
  font-weight: 700;
}
[data-theme="dark"] .sidebar-link { color: var(--color-text-secondary); border-left: 3px solid transparent; border-right: none; border-radius: 0 8px 8px 0; margin-right: 0.75rem; }
[data-theme="dark"] .sidebar-link:hover { background: rgba(255,255,255,0.05) !important; color: var(--color-text-primary) !important; }
[data-theme="dark"] .sidebar-link.active { background: rgba(0,212,170,0.1) !important; color: var(--color-accent) !important; border-left-color: var(--color-accent) !important; }

/* Body: visible tinted background */
body {
  background: linear-gradient(150deg, #eef1fa 0%, #f5f7fd 45%, #edf8f5 100%);
  background-attachment: fixed;
}
[data-theme="dark"] body {
  background: linear-gradient(150deg, #080d1a 0%, #0e0e1a 60%, #091017 100%);
  background-attachment: fixed;
}

/* Page header: colorful gradient banner */
.page-header {
  margin: -2rem -2.5rem 2rem;
  padding: 2rem 2.5rem 1.5rem;
  background: linear-gradient(120deg, #1d2951 0%, #243584 55%, #1a3f6f 100%);
  border-radius: 0 0 20px 20px;
  box-shadow: 0 4px 24px rgba(29,41,81,0.18);
}
.page-header h2 {
  color: #fff !important;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.25rem;
}
.page-header h2::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 1.15em;
  border-radius: 3px;
  background: linear-gradient(180deg, #00c9a7, #66d9c0);
  flex-shrink: 0;
}
.page-header p, .page-header .subtitle { color: rgba(255,255,255,0.72) !important; }
[data-theme="dark"] .page-header {
  background: linear-gradient(120deg, #0d1424 0%, #15213a 55%, #0f1f35 100%);
  box-shadow: 0 4px 24px rgba(0,0,0,0.35);
}
@media (max-width: 768px) {
  .page-header { margin: -1.25rem -1.25rem 1.5rem; padding: 1.25rem 1.25rem 1.1rem; }
}

/* Section header */
.section-header {
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 1.25rem;
}

/* Form controls */
.form-label { font-weight: 600; font-size: 0.83rem; }
.form-control { border-radius: 10px; padding: 0.7rem 1rem; }
.form-control:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0,201,167,0.15);
}

/* Cards: stronger shadows */
.card {
  box-shadow: 0 1px 4px rgba(0,0,0,0.06), 0 6px 20px rgba(0,0,0,0.07);
  border: 1px solid var(--color-border);
}
.card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.1), 0 14px 36px rgba(0,0,0,0.09);
  transform: translateY(-2px);
}

/* Upgrade banner */
.upgrade-banner {
  background: linear-gradient(135deg, #1d2951, #2d3f7a 55%, #4c1d95);
  border: none;
  box-shadow: 0 4px 20px rgba(29,41,81,0.28);
}

/* Toast notifications */
.toast {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  background: var(--color-surface); color: var(--color-text-primary);
  border: 1px solid var(--color-border); border-radius: 12px;
  padding: 0.9rem 1.25rem; font-size: 0.88rem; font-weight: 500;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18); z-index: 9999;
  animation: toastSlideUp 0.25s ease; max-width: 320px;
}
.toast-success { border-left: 4px solid #00c9a7; }
.toast-error   { border-left: 4px solid #ff6b6b; }
.toast-info    { border-left: 4px solid #1d2951; }
@keyframes toastSlideUp { from { opacity:0; transform:translateY(12px); } to { opacity:1; transform:none; } }

/* Pricing cards */
.pricing-card { transition: transform 0.2s, box-shadow 0.2s; }
.pricing-card:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(0,0,0,0.13); }
.pricing-card.featured { border-color: var(--color-accent); box-shadow: 0 0 0 4px rgba(0,201,167,0.12), 0 8px 28px rgba(0,0,0,0.1); }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
thead th {
  background: rgba(29,41,81,0.05); color: var(--color-text-secondary);
  font-size: 0.71rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
  padding: 0.65rem 1rem; border-bottom: 1px solid var(--color-border); text-align: left;
}
[data-theme="dark"] thead th { background: rgba(255,255,255,0.05); }
tbody td { padding: 0.75rem 1rem; border-bottom: 1px solid var(--color-border); color: var(--color-text-primary); vertical-align: top; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: rgba(0,201,167,0.03); }

/* Empty states */
.empty-state {
  background: var(--color-surface);
  border: 1.5px dashed var(--color-border);
  border-radius: 16px; padding: 3.5rem 1.5rem;
}