/* ============================================================
   Admin Dashboard CSS - Modern Professional Design
   ============================================================ */

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

:root {
  --admin-primary:      #C0392B;
  --admin-yellow:       #F39C12;
  --admin-sidebar-bg:   #1a1a2e;
  --admin-sidebar-width: 260px;
  --admin-header-height: 65px;
  --admin-bg:           #f0f2f5;
  --admin-card-bg:      #ffffff;
  --admin-border:       #e2e8f0;
  --admin-text:         #2d3748;
  --admin-muted:        #718096;
  --admin-gradient:     linear-gradient(135deg, #C0392B, #F39C12);
  --font-thai:          'Noto Sans Thai', 'Sarabun', sans-serif;
  --radius:             12px;
  --shadow:             0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg:          0 8px 40px rgba(0,0,0,0.12);
}

[data-admin-theme="dark"] {
  --admin-bg:       #0d1117;
  --admin-card-bg:  #161b22;
  --admin-border:   rgba(255,255,255,0.08);
  --admin-text:     #e2e8f0;
  --admin-muted:    #718096;
}

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

body.admin-body {
  font-family: var(--font-thai);
  background: var(--admin-bg);
  color: var(--admin-text);
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ── */
.admin-sidebar {
  width: var(--admin-sidebar-width);
  background: var(--admin-sidebar-bg);
  min-height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, width 0.3s ease;
  overflow-x: hidden;
}

.admin-sidebar.collapsed {
  width: 70px;
}

.sidebar-header {
  background: linear-gradient(135deg, #C0392B, #922B21);
  padding: 1.2rem;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  min-height: var(--admin-header-height);
}

.sidebar-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  border: 2px solid rgba(255,255,255,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.sidebar-brand {
  overflow: hidden;
  white-space: nowrap;
  transition: opacity 0.3s;
}

.sidebar-brand .school-name {
  color: white;
  font-size: 0.9rem;
  font-weight: 800;
  display: block;
}

.sidebar-brand .admin-label {
  color: rgba(255,255,255,0.65);
  font-size: 0.72rem;
}

.admin-sidebar.collapsed .sidebar-brand,
.admin-sidebar.collapsed .nav-label,
.admin-sidebar.collapsed .nav-section-title {
  display: none;
}

/* Sidebar Nav */
.sidebar-nav {
  padding: 1rem 0;
  flex: 1;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

.nav-section-title {
  padding: 0.8rem 1.2rem 0.3rem;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  letter-spacing: 1.2px;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 1.2rem;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.2s ease;
  border-left: 3px solid transparent;
  position: relative;
  white-space: nowrap;
}

.sidebar-nav-item:hover {
  background: rgba(255,255,255,0.07);
  color: rgba(255,255,255,0.9);
}

.sidebar-nav-item.active {
  background: rgba(192, 57, 43, 0.25);
  border-left-color: var(--admin-primary);
  color: white;
}

.sidebar-nav-item .nav-icon {
  width: 22px;
  text-align: center;
  font-size: 1rem;
  flex-shrink: 0;
  color: rgba(255,255,255,0.5);
}

.sidebar-nav-item.active .nav-icon,
.sidebar-nav-item:hover .nav-icon {
  color: var(--admin-yellow);
}

.sidebar-nav-item .nav-badge {
  margin-left: auto;
  background: var(--admin-primary);
  color: white;
  font-size: 0.65rem;
  padding: 2px 7px;
  border-radius: 10px;
  font-weight: 700;
}

/* Sub-menu */
.sidebar-submenu {
  list-style: none;
  padding: 0;
  background: rgba(0,0,0,0.2);
  display: none;
}

.sidebar-submenu.open { display: block; }

.sidebar-submenu .sidebar-nav-item {
  padding-left: 3.5rem;
  font-size: 0.85rem;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: 1rem 1.2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: 10px;
  background: rgba(255,255,255,0.05);
}

.sidebar-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--admin-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.sidebar-user-info .user-name {
  color: rgba(255,255,255,0.9);
  font-size: 0.82rem;
  font-weight: 700;
  display: block;
}

.sidebar-user-info .user-role {
  color: rgba(255,255,255,0.45);
  font-size: 0.72rem;
}

/* ── Main Content ── */
.admin-main {
  margin-left: var(--admin-sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left 0.3s ease;
}

.admin-main.expanded {
  margin-left: 70px;
}

/* ── Top Header ── */
.admin-header {
  height: var(--admin-header-height);
  background: var(--admin-card-bg);
  border-bottom: 1px solid var(--admin-border);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.admin-header .toggle-btn {
  background: none;
  border: none;
  font-size: 1.3rem;
  color: var(--admin-muted);
  cursor: pointer;
  padding: 5px;
  border-radius: 8px;
  transition: all 0.2s;
}

.admin-header .toggle-btn:hover {
  background: var(--admin-bg);
  color: var(--admin-text);
}

.admin-header .page-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--admin-text);
  flex: 1;
}

.admin-header .header-actions {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.header-icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--admin-bg);
  border: 1px solid var(--admin-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--admin-muted);
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  text-decoration: none;
}

.header-icon-btn:hover {
  background: var(--admin-primary);
  color: white;
  border-color: var(--admin-primary);
}

.header-icon-btn .notif-dot {
  position: absolute;
  top: 3px;
  right: 3px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--admin-primary);
  border: 2px solid var(--admin-card-bg);
}

/* ── Content Area ── */
.admin-content {
  flex: 1;
  padding: 1.5rem;
}

/* ── Stat Cards ── */
.stat-card {
  background: var(--admin-card-bg);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--admin-border);
  display: flex;
  align-items: center;
  gap: 1.2rem;
  transition: all 0.3s ease;
  text-decoration: none;
}

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

.stat-card-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.stat-card-icon.red    { background: rgba(192,57,43,0.12); color: var(--admin-primary); }
.stat-card-icon.yellow { background: rgba(243,156,18,0.12); color: var(--admin-yellow); }
.stat-card-icon.green  { background: rgba(39,174,96,0.12); color: #27ae60; }
.stat-card-icon.blue   { background: rgba(41,128,185,0.12); color: #2980b9; }
.stat-card-icon.purple { background: rgba(142,68,173,0.12); color: #8e44ad; }

.stat-card-info .stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--admin-text);
  line-height: 1;
}

.stat-card-info .stat-label {
  font-size: 0.82rem;
  color: var(--admin-muted);
  margin-top: 3px;
}

.stat-card-info .stat-change {
  font-size: 0.78rem;
  margin-top: 4px;
  font-weight: 600;
}

.stat-change.up { color: #27ae60; }
.stat-change.down { color: var(--admin-primary); }

/* ── Chart Card ── */
.chart-card {
  background: var(--admin-card-bg);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--admin-border);
}

.chart-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.chart-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--admin-text);
}

/* ── Data Table Card ── */
.admin-table-card {
  background: var(--admin-card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--admin-border);
  overflow: hidden;
}

.admin-table-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--admin-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.admin-table-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--admin-text);
}

/* ── Buttons (Admin) ── */
.btn-admin-primary {
  background: var(--admin-gradient);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 8px 18px;
  font-size: 0.88rem;
  font-weight: 700;
  font-family: var(--font-thai);
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-admin-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(192,57,43,0.4);
  color: white;
}

.btn-admin-outline {
  background: transparent;
  color: var(--admin-primary);
  border: 2px solid var(--admin-primary);
  border-radius: 8px;
  padding: 7px 18px;
  font-size: 0.88rem;
  font-weight: 700;
  font-family: var(--font-thai);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-admin-outline:hover {
  background: var(--admin-primary);
  color: white;
}

/* ── Admin Form ── */
.admin-form-card {
  background: var(--admin-card-bg);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--admin-border);
}

.admin-form-section {
  margin-bottom: 2rem;
}

.admin-form-section-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--admin-primary);
  border-bottom: 2px solid rgba(192,57,43,0.15);
  padding-bottom: 0.5rem;
  margin-bottom: 1.2rem;
}

.form-label-admin {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--admin-text);
  margin-bottom: 6px;
}

.form-control-admin {
  border: 2px solid var(--admin-border);
  border-radius: 8px;
  padding: 9px 14px;
  font-family: var(--font-thai);
  font-size: 0.9rem;
  width: 100%;
  transition: border-color 0.2s;
  background: var(--admin-card-bg);
  color: var(--admin-text);
}

.form-control-admin:focus {
  border-color: var(--admin-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(192,57,43,0.1);
}

/* Image Preview */
.img-preview-box {
  width: 150px;
  height: 150px;
  border: 3px dashed var(--admin-border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  overflow: hidden;
  background: var(--admin-bg);
}

.img-preview-box:hover {
  border-color: var(--admin-primary);
  background: rgba(192,57,43,0.05);
}

.img-preview-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── Status Badge ── */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
}

.status-badge.published { background: rgba(39,174,96,0.1); color: #27ae60; }
.status-badge.draft     { background: rgba(108,117,125,0.1); color: #6c757d; }
.status-badge.archived  { background: rgba(192,57,43,0.1); color: var(--admin-primary); }
.status-badge.active    { background: rgba(39,174,96,0.1); color: #27ae60; }
.status-badge.inactive  { background: rgba(192,57,43,0.1); color: var(--admin-primary); }

/* ── Action Buttons in Tables ── */
.btn-action {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-action.edit   { background: rgba(41,128,185,0.1); color: #2980b9; }
.btn-action.delete { background: rgba(192,57,43,0.1); color: var(--admin-primary); }
.btn-action.view   { background: rgba(39,174,96,0.1); color: #27ae60; }

.btn-action:hover { transform: scale(1.15); }

/* ── Breadcrumb Admin ── */
.admin-breadcrumb {
  background: none;
  padding: 0;
  font-size: 0.82rem;
}

.admin-breadcrumb .breadcrumb-item a { color: var(--admin-primary); }
.admin-breadcrumb .breadcrumb-item.active { color: var(--admin-muted); }

/* ── Quick Activity ── */
.activity-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--admin-border);
}

.activity-item:last-child { border-bottom: none; }

.activity-dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.activity-info .action { font-size: 0.85rem; font-weight: 600; color: var(--admin-text); }
.activity-info .time { font-size: 0.75rem; color: var(--admin-muted); }

/* ── Responsive ── */
@media (max-width: 992px) {
  .admin-sidebar {
    transform: translateX(-100%);
  }
  .admin-sidebar.mobile-open {
    transform: translateX(0);
  }
  .admin-main {
    margin-left: 0 !important;
  }
  .sidebar-overlay {
    display: block !important;
  }
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 999;
}

/* ── Login Page ── */
.admin-login-page {
  min-height: 100vh;
  background: var(--admin-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  position: relative;
  overflow: hidden;
}

.admin-login-page::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  top: -200px;
  right: -200px;
}

.admin-login-page::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(0,0,0,0.1);
  bottom: -150px;
  left: -100px;
}

.login-card {
  background: white;
  border-radius: 20px;
  padding: 3rem;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.3);
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.6s ease;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

.login-logo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--admin-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2rem;
  margin: 0 auto 1.5rem;
  box-shadow: 0 10px 30px rgba(192,57,43,0.4);
}

.login-title { font-size: 1.5rem; font-weight: 800; text-align: center; margin-bottom: 0.3rem; }
.login-subtitle { font-size: 0.85rem; color: #6c757d; text-align: center; margin-bottom: 2rem; }

.login-input-group {
  position: relative;
  margin-bottom: 1rem;
}

.login-input-group .input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: #adb5bd;
  font-size: 0.95rem;
}

.login-input-group input {
  width: 100%;
  padding: 12px 14px 12px 42px;
  border: 2px solid #e9ecef;
  border-radius: 10px;
  font-family: var(--font-thai);
  font-size: 0.9rem;
  transition: border-color 0.2s;
}

.login-input-group input:focus {
  border-color: var(--admin-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(192,57,43,0.1);
}

.login-btn {
  width: 100%;
  background: var(--admin-gradient);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 13px;
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font-thai);
  cursor: pointer;
  transition: all 0.3s;
  margin-top: 0.5rem;
}

.login-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(192,57,43,0.4);
}

/* ── Header Search Bar ── */
.search-bar {
  position: relative;
  display: flex;
  align-items: center;
}

.search-bar .form-control {
  padding-right: 35px;
  border-radius: 20px;
  background: var(--admin-bg);
  border: 1px solid var(--admin-border);
  font-size: 0.85rem;
  height: 34px;
  color: var(--admin-text);
  width: 100%;
  transition: all 0.2s ease;
}

.search-bar .form-control:focus {
  border-color: var(--admin-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.1);
  background: var(--admin-card-bg);
}

.search-bar .search-btn {
  position: absolute;
  right: 5px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--admin-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  transition: color 0.2s ease;
}

.search-bar .search-btn:hover {
  color: var(--admin-primary);
}