/* ==========================================================================
   Design System & Custom CSS - Sistem Daftar Kunjungan Perpustakaan
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700&display=swap');

:root {
  /* Color Palette - Premium Teal/Indigo & Emerald Slate */
  --primary-hue: 174;
  --primary: hsl(var(--primary-hue), 72%, 40%);
  --primary-hover: hsl(var(--primary-hue), 75%, 34%);
  --primary-light: hsl(var(--primary-hue), 70%, 94%);
  --primary-glow: hsla(var(--primary-hue), 72%, 40%, 0.25);

  --secondary-hue: 242;
  --secondary: hsl(var(--secondary-hue), 68%, 58%);
  --secondary-light: hsl(var(--secondary-hue), 65%, 95%);
  --secondary-glow: hsla(var(--secondary-hue), 68%, 58%, 0.2);

  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --accent-emerald: #10b981;
  --accent-sky: #0284c7;

  /* Neutral Spectrum - Light Theme */
  --bg-body: #f4f6fa;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.85);

  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  --border-color: #e2e8f0;
  --border-focus: var(--primary);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.08), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 28px -4px rgba(15, 23, 42, 0.12), 0 4px 12px -2px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 8px 24px var(--primary-glow);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --sidebar-width: 260px;
}

/* Dark Theme Overrides */
[data-theme="dark"] {
  --bg-body: #0b0f19;
  --bg-surface: #131b2e;
  --bg-surface-elevated: #1c2742;
  --bg-glass: rgba(19, 27, 46, 0.85);

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-light: #64748b;

  --border-color: #1e293b;
  --border-focus: hsl(var(--primary-hue), 80%, 50%);

  --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 28px -4px rgba(0, 0, 0, 0.4);
}

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

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

/* App Layout Grid */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar Navigation */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: var(--transition);
}

.sidebar-header {
  padding: 1.5rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  border-bottom: 1px solid var(--border-color);
}

.brand-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.35rem;
  box-shadow: var(--shadow-glow);
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.nav-menu {
  padding: 1.25rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.925rem;
  transition: var(--transition);
  cursor: pointer;
}

.nav-item i {
  font-size: 1.15rem;
  width: 24px;
  text-align: center;
  transition: var(--transition);
}

.nav-item:hover {
  color: var(--primary);
  background: var(--primary-light);
}

[data-theme="dark"] .nav-item:hover {
  background: rgba(20, 184, 166, 0.12);
}

.nav-item.active {
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary), hsl(var(--primary-hue), 72%, 32%));
  box-shadow: var(--shadow-glow);
}

.sidebar-footer {
  padding: 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.clock-widget {
  background: var(--bg-body);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  text-align: center;
  border: 1px solid var(--border-color);
}

.clock-time {
  font-size: 1.25rem;
  font-weight: 800;
  font-family: 'Outfit', monospace;
  color: var(--primary);
}

.clock-date {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Main Content Wrapper */
.main-wrapper {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* Top Header Bar */
.top-header {
  height: 70px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 90;
}

.header-title-area h2 {
  font-size: 1.4rem;
  font-weight: 700;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  font-size: 1.1rem;
}

.btn-icon:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* Page Views System */
.page-view {
  display: none;
  padding: 2rem;
  animation: fadeIn 0.3s ease-in-out;
}

.page-view.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Metric Cards Banner */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.35rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--card-accent, var(--primary));
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--icon-bg, var(--primary-light));
  color: var(--icon-color, var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.stat-info h3 {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 0.2rem;
}

.stat-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

.stat-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  margin-top: 0.4rem;
}

.badge-up {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
}

/* Charts Grid */
.charts-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (max-width: 1024px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.card-title i {
  color: var(--primary);
}

.chart-container {
  position: relative;
  height: 280px;
  width: 100%;
}

/* Dashboard Section Grid */
.dashboard-bottom-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .dashboard-bottom-grid {
    grid-template-columns: 1fr;
  }
}

/* Form Styling - Buku Tamu */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

@media (max-width: 768px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border-color);
  background: var(--bg-surface-elevated);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2364748b' viewBox='0 0 16 16'><path d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* Radio / Pill Selectors for Category */
.category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.pill-option {
  position: relative;
}

.pill-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.pill-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border-color);
  background: var(--bg-surface-elevated);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.pill-option input[type="radio"]:checked + .pill-label {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

/* Button UI Elements */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn i {
  pointer-events: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), hsl(var(--primary-hue), 72%, 34%));
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px var(--primary-glow);
}

.btn-secondary {
  background: var(--bg-body);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--border-color);
}

.btn-emerald {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #ffffff;
}

.btn-emerald:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(16, 185, 129, 0.3);
}

.btn-danger {
  background: rgba(244, 63, 94, 0.1);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.2);
}

.btn-danger:hover {
  background: var(--accent-rose);
  color: #ffffff;
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.825rem;
  border-radius: var(--radius-sm);
}

/* Data Table Styling */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.data-table th {
  background: var(--bg-body);
  color: var(--text-muted);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
}

.data-table tbody tr {
  transition: var(--transition);
}

.data-table tbody tr:hover {
  background: rgba(20, 184, 166, 0.04);
}

/* Badges for Categories */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-full);
  font-size: 0.775rem;
  font-weight: 700;
}

.badge-siswa { background: rgba(2, 132, 199, 0.12); color: #0284c7; }
.badge-guru { background: rgba(16, 185, 129, 0.12); color: #059669; }
.badge-mahasiswa { background: rgba(124, 58, 237, 0.12); color: #7c3aed; }
.badge-umum { background: rgba(245, 158, 11, 0.12); color: #d97706; }

/* Filter Toolbar */
.filter-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  background: var(--bg-surface);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
}

.search-input-wrapper {
  position: relative;
  min-width: 240px;
}

.search-input-wrapper i {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.search-input-wrapper input {
  padding-left: 2.5rem;
}

/* Modal Popup Styles */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 500px;
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: var(--transition);
  text-align: center;
}

.modal-backdrop.active .modal-card {
  transform: scale(1);
}

.ticket-badge {
  background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
  border: 2px dashed var(--primary);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 1.25rem 0;
}

[data-theme="dark"] .ticket-badge {
  background: rgba(255, 255, 255, 0.05);
}

.ticket-number {
  font-size: 2.2rem;
  font-weight: 800;
  font-family: 'Outfit', monospace;
  color: var(--primary);
  letter-spacing: 0.1em;
}

/* Empty State Component */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 3rem;
  color: var(--text-light);
  margin-bottom: 1rem;
}

/* Print Styles */
@media print {
  .sidebar, .top-header, .filter-toolbar, .btn, .nav-menu {
    display: none !important;
  }
  .main-wrapper {
    margin-left: 0 !important;
  }
  .page-view {
    display: block !important;
    padding: 0 !important;
  }
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .card, .stat-card {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
  }
}