/* ==========================================================================
   Modern Government Web Application Theme
   SVCTRACE70 - Suratthani Vocational College
   Color Palette: Navy (#0f2c59), Deep Blue (#1e3a8a), Accent Blue (#1d4ed8), Light Blue (#e0f2fe)
   Typography: Sarabun, Prompt, sans-serif
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Prompt:wght@300;400;500;600;700&family=Sarabun:wght@300;400;500;600;700&display=swap');

:root {
  --navy-dark: #0f2c59;
  --navy-primary: #1e3a8a;
  --blue-accent: #1d4ed8;
  --blue-light: #e0f2fe;
  --blue-soft: #f0f7ff;
  --text-dark: #1e293b;
  --text-muted: #64748b;
  --bg-main: #f8fafc;
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  
  --sidebar-width: 270px;
  --sidebar-collapsed-width: 70px;
  --header-height: 70px;
  --transition-speed: 0.25s;
}

body {
  font-family: 'Sarabun', 'Prompt', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-dark);
  margin: 0;
  padding: 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6, .fw-title {
  font-family: 'Prompt', 'Sarabun', sans-serif;
  font-weight: 600;
}

/* ==========================================================================
   Header / Navbar
   ========================================================================== */
#header {
  height: var(--header-height);
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-primary) 100%);
  box-shadow: 0 4px 15px rgba(15, 44, 89, 0.15);
  z-index: 1030;
  padding: 0 1.25rem;
  transition: all var(--transition-speed) ease-in-out;
}

#header .logo {
  text-decoration: none;
}

#header .logo img {
  max-height: 44px;
  margin-right: 10px;
  filter: drop-shadow(0px 2px 4px rgba(0,0,0,0.2));
}

#header .logo span {
  font-size: 1.1rem;
  font-weight: 600;
  color: #ffffff;
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.toggle-sidebar-btn {
  font-size: 1.5rem;
  color: #ffffff;
  cursor: pointer;
  margin-right: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  transition: background var(--transition-speed) ease;
}

.toggle-sidebar-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* User Profile Nav Dropdown */
.header-nav .nav-profile {
  color: #ffffff;
}

.header-nav .nav-profile img {
  max-height: 38px;
  width: 38px;
  object-fit: cover;
  border: 2px solid var(--blue-light);
}

.header-nav .nav-profile span {
  font-size: 0.9rem;
  font-weight: 500;
}

.header-nav .profile .dropdown-header {
  background-color: var(--blue-soft);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 15px;
}

.header-nav .profile .dropdown-header h6 {
  color: var(--navy-dark);
  margin-bottom: 2px;
  font-size: 0.95rem;
}

.header-nav .profile .dropdown-header span {
  color: var(--text-muted);
  font-size: 0.825rem;
}

/* ==========================================================================
   Sidebar Navigation (Desktop Collapsible & Offcanvas Mobile)
   ========================================================================== */
#sidebar {
  position: fixed;
  top: var(--header-height);
  bottom: 0;
  left: 0;
  width: var(--sidebar-width);
  background: #ffffff;
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.04);
  z-index: 1020;
  padding: 1rem 0.75rem;
  overflow-y: auto;
  transition: all var(--transition-speed) ease-in-out;
  border-right: 1px solid var(--border-color);
}

/* Collapsed Sidebar on Desktop */
body.toggle-sidebar #sidebar {
  width: var(--sidebar-collapsed-width);
  padding: 1rem 0.4rem;
}

body.toggle-sidebar #sidebar .sidebar-nav .nav-link span,
body.toggle-sidebar #sidebar .sidebar-nav .nav-heading,
body.toggle-sidebar #sidebar .sidebar-nav .bi-chevron-down {
  display: none !important;
}

body.toggle-sidebar #sidebar .sidebar-nav .nav-link {
  justify-content: center;
  padding: 12px 0;
}

body.toggle-sidebar #sidebar .sidebar-nav .nav-link i {
  margin-right: 0;
  font-size: 1.4rem;
}

body.toggle-sidebar #main,
body.toggle-sidebar #footer {
  margin-left: var(--sidebar-collapsed-width);
}

/* Sidebar Nav Items */
.sidebar-nav {
  padding: 0;
  margin: 0;
  list-style: none;
}

.sidebar-nav .nav-item {
  margin-bottom: 4px;
}

.sidebar-nav .nav-heading {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
  margin: 15px 0 5px 12px;
  letter-spacing: 0.5px;
}

.sidebar-nav .nav-link {
  display: flex;
  align-items: center;
  font-size: 0.925rem;
  font-weight: 500;
  color: #334155;
  padding: 10px 14px;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.sidebar-nav .nav-link i {
  font-size: 1.2rem;
  margin-right: 12px;
  color: var(--navy-primary);
  transition: color 0.2s ease;
}

.sidebar-nav .nav-link:hover {
  background-color: var(--blue-soft);
  color: var(--navy-dark);
}

.sidebar-nav .nav-link:hover i {
  color: var(--blue-accent);
}

.sidebar-nav .nav-link.active {
  background: linear-gradient(135deg, var(--navy-dark), var(--navy-primary));
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(15, 44, 89, 0.2);
}

.sidebar-nav .nav-link.active i {
  color: #ffffff;
}

.sidebar-nav .nav-content {
  padding: 5px 0 0 0;
  margin: 0;
  list-style: none;
}

.sidebar-nav .nav-content a {
  display: flex;
  align-items: center;
  font-size: 0.875rem;
  font-weight: 500;
  color: #475569;
  padding: 8px 10px 8px 40px;
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.sidebar-nav .nav-content a i {
  font-size: 0.5rem;
  margin-right: 10px;
  line-height: 0;
}

.sidebar-nav .nav-content a:hover,
.sidebar-nav .nav-content a.active {
  color: var(--blue-accent);
  background-color: var(--blue-soft);
}

/* ==========================================================================
   Main Layout Container
   ========================================================================== */
#main {
  margin-left: var(--sidebar-width);
  margin-top: var(--header-height);
  padding: 25px;
  min-height: calc(100vh - var(--header-height) - 60px);
  transition: all var(--transition-speed) ease-in-out;
}

.pagetitle {
  margin-bottom: 20px;
}

.pagetitle h1 {
  font-size: 1.5rem;
  color: var(--navy-dark);
  margin-bottom: 5px;
}

.breadcrumb {
  background: transparent;
  padding: 0;
  margin-bottom: 0;
  font-size: 0.875rem;
}

.breadcrumb-item a {
  color: var(--text-muted);
  text-decoration: none;
}

.breadcrumb-item.active {
  color: var(--blue-accent);
  font-weight: 500;
}

/* ==========================================================================
   Cards & UI Components
   ========================================================================== */
.card {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
  background-color: var(--card-bg);
  margin-bottom: 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card-header {
  background-color: transparent;
  border-bottom: 1px solid var(--border-color);
  padding: 16px 20px;
  font-weight: 600;
  color: var(--navy-dark);
}

.card-title {
  font-size: 1.1rem;
  color: var(--navy-dark);
  font-weight: 600;
  margin-bottom: 15px;
}

/* Info Summary Cards */
.info-card {
  padding-bottom: 10px;
}

.info-card .card-icon {
  font-size: 32px;
  line-height: 0;
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  flex-grow: 0;
}

.sales-card .card-icon {
  color: var(--blue-accent);
  background: var(--blue-light);
}

.revenue-card .card-icon {
  color: #10b981;
  background: #d1fae5;
}

.customers-card .card-icon {
  color: #f59e0b;
  background: #fef3c7;
}

/* ==========================================================================
   Buttons & Badges
   ========================================================================== */
.btn-primary {
  background-color: var(--blue-accent);
  border-color: var(--blue-accent);
  box-shadow: 0 2px 6px rgba(29, 78, 216, 0.25);
  border-radius: 8px;
  padding: 8px 18px;
  font-weight: 500;
}

.btn-primary:hover, .btn-primary:focus {
  background-color: var(--navy-primary);
  border-color: var(--navy-primary);
}

.btn-navy {
  background-color: var(--navy-dark);
  border-color: var(--navy-dark);
  color: #ffffff;
  border-radius: 8px;
}

.btn-navy:hover {
  background-color: #081a36;
  color: #ffffff;
}

/* ==========================================================================
   DataTables & Select2 Custom Styling
   ========================================================================== */
.table {
  vertical-align: middle;
}

.table thead th {
  background-color: var(--blue-soft);
  color: var(--navy-dark);
  font-weight: 600;
  border-bottom: 2px solid var(--border-color);
  font-size: 0.9rem;
  padding: 12px 15px;
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
  background-color: #f8fafc;
}

div.dataTables_wrapper div.dataTables_filter input {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 6px 12px;
}

div.dataTables_wrapper div.dataTables_length select {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 6px 12px;
}

.select2-container--bootstrap-5 .select2-selection {
  border-radius: 8px !important;
  border-color: var(--border-color) !important;
  min-height: 40px !important;
}

/* ==========================================================================
   Footer
   ========================================================================== */
#footer {
  margin-left: var(--sidebar-width);
  padding: 20px 25px;
  font-size: 0.875rem;
  background-color: #ffffff;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  transition: all var(--transition-speed) ease-in-out;
}

.back-to-top {
  position: fixed;
  visibility: hidden;
  opacity: 0;
  right: 20px;
  bottom: 20px;
  z-index: 99999;
  background: var(--blue-accent);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  transition: all 0.4s;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.back-to-top i {
  font-size: 24px;
}

.back-to-top.active {
  visibility: visible;
  opacity: 1;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1199px) {
  #sidebar {
    left: -280px;
  }
  
  #main, #footer {
    margin-left: 0;
  }

  body.toggle-sidebar #sidebar {
    left: 0;
    width: var(--sidebar-width);
  }

  body.toggle-sidebar #sidebar .sidebar-nav .nav-link span,
  body.toggle-sidebar #sidebar .sidebar-nav .nav-heading,
  body.toggle-sidebar #sidebar .sidebar-nav .bi-chevron-down {
    display: inline-block !important;
  }

  body.toggle-sidebar #main,
  body.toggle-sidebar #footer {
    margin-left: 0;
  }
}

/* ==========================================================================
   Dark Mode / Night Mode Overrides (โหมดกลางคืน)
   ========================================================================== */
[data-bs-theme="dark"], body.dark-mode {
  --bg-main: #0f172a;
  --card-bg: #1e293b;
  --text-dark: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: #334155;
  --blue-soft: #1e293b;
  --blue-light: #1e293b;
  color: var(--text-dark);
  background-color: var(--bg-main);
}

[data-bs-theme="dark"] #sidebar,
body.dark-mode #sidebar {
  background-color: #1e293b;
  border-color: #334155;
}

[data-bs-theme="dark"] .sidebar-nav .nav-link,
body.dark-mode .sidebar-nav .nav-link {
  color: #cbd5e1;
}

[data-bs-theme="dark"] .sidebar-nav .nav-link:hover,
body.dark-mode .sidebar-nav .nav-link:hover {
  background-color: #334155;
  color: #ffffff;
}

[data-bs-theme="dark"] .sidebar-nav .nav-content a,
body.dark-mode .sidebar-nav .nav-content a {
  color: #94a3b8;
}

[data-bs-theme="dark"] .card,
body.dark-mode .card {
  background-color: #1e293b;
  border-color: #334155;
  color: #f8fafc;
}

[data-bs-theme="dark"] .card-header,
body.dark-mode .card-header {
  background-color: #1e293b;
  border-color: #334155;
  color: #f8fafc !important;
}

[data-bs-theme="dark"] .card-title,
[data-bs-theme="dark"] .pagetitle h1,
body.dark-mode .card-title,
body.dark-mode .pagetitle h1 {
  color: #60a5fa !important;
}

[data-bs-theme="dark"] .table,
body.dark-mode .table {
  color: #f8fafc;
  border-color: #334155;
}

[data-bs-theme="dark"] .table thead th,
body.dark-mode .table thead th {
  background-color: #0f172a;
  color: #93c5fd;
  border-color: #334155;
}

[data-bs-theme="dark"] .table-striped > tbody > tr:nth-of-type(odd) > *,
body.dark-mode .table-striped > tbody > tr:nth-of-type(odd) > * {
  background-color: #1e293b;
  color: #f8fafc;
}

[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select,
body.dark-mode .form-control,
body.dark-mode .form-select {
  background-color: #0f172a;
  color: #f8fafc;
  border-color: #334155;
}

[data-bs-theme="dark"] .form-control:focus,
[data-bs-theme="dark"] .form-select:focus,
body.dark-mode .form-control:focus,
body.dark-mode .form-select:focus {
  background-color: #0f172a;
  color: #ffffff;
  border-color: #3b82f6;
}

[data-bs-theme="dark"] #footer,
body.dark-mode #footer {
  background-color: #0f172a;
  border-color: #334155;
  color: #94a3b8;
}

[data-bs-theme="dark"] .offcanvas,
body.dark-mode .offcanvas {
  background-color: #1e293b;
  color: #f8fafc;
}

/* ==========================================================================
   Auth Pages Layout & Background (login.php, register.php, forgot.php)
   ========================================================================== */
.auth-wrapper {
  min-height: 100vh;
  background: linear-gradient(135deg, #f8fafc 0%, #e0f2fe 50%, #f1f5f9 100%);
  transition: background var(--transition-speed) ease;
}

[data-bs-theme="dark"] .auth-wrapper,
body.dark-mode .auth-wrapper {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
}

.auth-card {
  box-shadow: 0 10px 30px rgba(15, 44, 89, 0.08);
}

[data-bs-theme="dark"] .auth-card,
body.dark-mode .auth-card {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.auth-theme-toggle {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 1050;
}

/* 5-Column KPI Stat Card Grid for Dashboard */
@media (min-width: 1200px) {
  .col-xl-2-4 {
    flex: 0 0 auto;
    width: 20%;
  }
}