/* ============================================================
   MODERN TTISS DESIGN SYSTEM - Contemporary & Professional
   ============================================================ */

:root {
  --primary: #0066cc;
  --primary-dark: #0052a3;
  --primary-light: #e6f0ff;
  --secondary: #6c757d;
  --success: #28a745;
  --danger: #dc3545;
  --warning: #ffc107;
  --info: #17a2b8;
  --light: #f8f9fa;
  --dark: #212529;
  --white: #ffffff;
  --border: #e9ecef;
  --text: #333333;
  --text-muted: #6c757d;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.15);
  --radius: 12px;
  --radius-lg: 16px;
}

/* ====== GENERAL STYLES ====== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #f0f3f7 100%);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: var(--primary-dark);
}

/* ====== SIDEBAR NAVIGATION ====== */
.admin-wrapper {
  display: flex;
  height: 100vh;
  background: var(--light);
}

.sidebar {
  width: 260px;
  background: var(--white);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-header img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
}

.sidebar-header .title {
  flex: 1;
}

.sidebar-header .title h5 {
  font-size: 14px;
  font-weight: 700;
  margin: 0;
  color: var(--dark);
}

.sidebar-header .title p {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 0;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  margin: 4px 8px;
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

.sidebar-nav a:hover {
  background: var(--primary-light);
  color: var(--primary);
  transform: translateX(4px);
}

.sidebar-nav a.active {
  background: var(--primary);
  color: var(--white);
}

.sidebar-nav a i {
  width: 20px;
  font-size: 18px;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}

.sidebar-footer .btn {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    height: 100vh;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }

  .sidebar.show {
    transform: translateX(0);
  }

  .admin-wrapper {
    flex-direction: column;
  }
}

/* ====== TOP BAR ====== */
.topbar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-sm);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.topbar-left .menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--text);
}

.topbar-title h1 {
  font-size: 20px;
  font-weight: 700;
  margin: 0;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.user-profile:hover {
  background: var(--light);
}

.user-profile img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.user-profile .info p {
  margin: 0;
  font-size: 12px;
  color: var(--text-muted);
}

.user-profile .info strong {
  display: block;
  font-size: 14px;
  color: var(--text);
  font-weight: 600;
}

@media (max-width: 768px) {
  .topbar-left .menu-toggle {
    display: block;
  }

  .topbar-right {
    gap: 8px;
  }
}

/* ====== MAIN CONTENT ====== */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.content-area {
  flex: 1;
  overflow-y: auto;
  padding: 32px;
  background: linear-gradient(135deg, #f5f7fa 0%, #f0f3f7 100%);
}

.page-header {
  margin-bottom: 32px;
}

.page-header h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 8px 0;
  color: var(--dark);
}

.page-header p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
}

/* ====== CARDS & CONTAINERS ====== */
.card {
  background: var(--white);
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--light);
  font-weight: 600;
  font-size: 16px;
}

.card-body {
  padding: 24px;
}

.card-footer {
  padding: 16px 24px;
  background: var(--light);
  border-top: 1px solid var(--border);
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

/* ====== DASHBOARD STATS ====== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--primary);
  transition: all 0.3s ease;
}

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

.stat-card.primary {
  border-left-color: var(--primary);
}

.stat-card.success {
  border-left-color: var(--success);
}

.stat-card.warning {
  border-left-color: var(--warning);
}

.stat-card.danger {
  border-left-color: var(--danger);
}

.stat-card .icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  font-size: 24px;
  margin-bottom: 16px;
}

.stat-card.primary .icon {
  background: var(--primary-light);
  color: var(--primary);
}

.stat-card.success .icon {
  background: #d4edda;
  color: var(--success);
}

.stat-card.warning .icon {
  background: #fff3cd;
  color: #856404;
}

.stat-card.danger .icon {
  background: #f8d7da;
  color: var(--danger);
}

.stat-card .value {
  font-size: 28px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}

.stat-card .label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

/* ====== FORMS ====== */
.form-control,
.form-select,
textarea.form-control {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
  transition: all 0.3s ease;
  background: var(--white);
}

.form-control:focus,
.form-select:focus,
textarea.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
  outline: none;
}

.form-label {
  font-weight: 500;
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--text);
}

.form-label .required {
  color: var(--danger);
}

.form-group {
  margin-bottom: 20px;
}

/* ====== BUTTONS ====== */
.btn {
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

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

.btn-secondary:hover {
  background: #5a6268;
  color: var(--white);
}

.btn-success {
  background: var(--success);
  color: var(--white);
}

.btn-danger {
  background: var(--danger);
  color: var(--white);
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

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

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 16px;
}

/* ====== TABLES ====== */
.table {
  border-collapse: collapse;
  width: 100%;
  margin: 0;
}

.table thead {
  background: var(--light);
}

.table thead th {
  font-weight: 600;
  font-size: 13px;
  padding: 12px 16px;
  border-bottom: 2px solid var(--border);
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.table tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.table tbody tr {
  transition: background 0.3s ease;
}

.table tbody tr:hover {
  background: #f9fafb;
}

.table-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.table-responsive {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background: var(--white);
}

/* ====== BADGES ====== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-primary {
  background: var(--primary-light);
  color: var(--primary);
}

.badge-success {
  background: #d4edda;
  color: #155724;
}

.badge-danger {
  background: #f8d7da;
  color: #721c24;
}

.badge-warning {
  background: #fff3cd;
  color: #856404;
}

.badge-secondary {
  background: #e2e3e5;
  color: #383d41;
}

/* ====== MODAL/DIALOG ====== */
.modal-content {
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.modal-header {
  border-bottom: 1px solid var(--border);
  padding: 20px 24px;
  background: var(--light);
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  border-top: 1px solid var(--border);
  padding: 16px 24px;
  background: var(--light);
}

/* ====== ALERTS ====== */
.alert {
  border: none;
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 14px;
  border-left: 4px solid;
}

.alert-primary {
  background: var(--primary-light);
  border-left-color: var(--primary);
  color: var(--primary-dark);
}

.alert-success {
  background: #d4edda;
  border-left-color: var(--success);
  color: #155724;
}

.alert-danger {
  background: #f8d7da;
  border-left-color: var(--danger);
  color: #721c24;
}

.alert-warning {
  background: #fff3cd;
  border-left-color: #ffc107;
  color: #856404;
}

/* ====== FRONTENDSTYLES ====== */
.frontend-nav {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.frontend-nav .navbar {
  padding: 16px 0;
}

.frontend-nav .navbar-brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark) !important;
}

.frontend-nav .nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text) !important;
  padding: 8px 16px !important;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.frontend-nav .nav-link:hover {
  background: var(--primary-light);
  color: var(--primary) !important;
}

.frontend-hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  padding: 80px 0;
  text-align: center;
}

.frontend-hero h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 16px;
}

.frontend-hero p {
  font-size: 18px;
  margin: 0;
  opacity: 0.95;
}

.frontend-section {
  padding: 80px 0;
}

.frontend-section h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 40px;
  text-align: center;
  color: var(--dark);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.post-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

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

.post-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--light);
}

.post-card-body {
  padding: 20px;
}

.post-card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--dark);
}

.post-card-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: flex;
  gap: 16px;
}

.post-card-excerpt {
  font-size: 14px;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.6;
}

.post-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 500;
  font-size: 14px;
}

.frontend-footer {
  background: var(--dark);
  color: var(--white);
  padding: 40px 0 20px;
  margin-top: 80px;
}

.frontend-footer h6 {
  font-weight: 600;
  margin-bottom: 16px;
  font-size: 14px;
}

.frontend-footer ul {
  list-style: none;
  padding: 0;
}

.frontend-footer ul li {
  margin-bottom: 8px;
}

.frontend-footer ul li a {
  color: #b0b0b0;
  font-size: 13px;
  transition: color 0.3s ease;
}

.frontend-footer ul li a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 32px;
  padding-top: 20px;
  text-align: center;
  font-size: 13px;
  color: #b0b0b0;
}

/* ====== ANIMATIONS ====== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes floatGlow {
  0% { transform: translateY(0); filter: drop-shadow(0 0 0 rgba(0, 102, 204, .0)); }
  50% { transform: translateY(-6px); filter: drop-shadow(0 12px 24px rgba(0, 102, 204, .22)); }
  100% { transform: translateY(0); filter: drop-shadow(0 0 0 rgba(0, 102, 204, .0)); }
}

.fade-in { animation: fadeIn 0.3s ease-out; }
.fade-in-up { animation: fadeInUp 0.6s ease-out both; }

/* ====== UNIFIED FRONTEND HERO ====== */
.frontend-hero-surface{
  position: relative;
  color: var(--white);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  overflow: hidden;
}
.frontend-hero-surface::before{
  content:'';
  position:absolute;
  top:-40%;
  right:-10%;
  width:520px;
  height:520px;
  background: rgba(255,255,255,0.10);
  border-radius:50%;
}
.frontend-hero-surface::after{
  content:'';
  position:absolute;
  bottom:-45%;
  left:-12%;
  width:420px;
  height:420px;
  background: rgba(255,255,255,0.06);
  border-radius:50%;
}
.frontend-hero-content{
  position: relative;
  z-index: 2;
}
.frontend-hero-badge{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.18);
  backdrop-filter: blur(6px);
  animation: floatGlow 4s ease-in-out infinite;
}

.frontend-hero-title{ font-size: 48px; font-weight: 800; margin-bottom: 10px; }
.frontend-hero-lead{ font-size: 18px; opacity: .95; }

@media (max-width: 768px){
  .frontend-hero-title{ font-size: 32px; }
  .frontend-hero-lead{ font-size: 16px; }
}

/* ====== UNIFIED FRONTEND CARDS ====== */
.frontend-card{
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(233, 236, 239, 0.9);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}
.frontend-card:hover{
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.frontend-card-img{
  width: 100%;
  height: 210px;
  object-fit: cover;
  background: linear-gradient(135deg, #f0f3f7 0%, #e6eef5 100%);
}
.frontend-card-body{ padding: 24px; }
.frontend-card-title{ font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 10px; line-height: 1.4; }
.frontend-card-excerpt{ font-size: 14px; color: var(--text); margin-bottom: 16px; line-height: 1.7; }
.frontend-card-link{ color: var(--primary); font-weight: 600; display: inline-flex; align-items:center; gap: 8px; font-size: 14px; }
.frontend-card-link:hover{ color: var(--primary-dark); }

/* ====== UNIFIED SECTION ====== */
.frontend-section{ padding: 80px 0; }
.frontend-section-header{text-align:center; margin-bottom:60px; }
.frontend-section-header h2{ font-size: 36px; font-weight: 800; margin-bottom: 12px; color: var(--dark);} 
.frontend-section-header p{ font-size: 16px; color: var(--text-muted); max-width: 560px; margin: 0 auto; }
@media (max-width: 768px){
  .frontend-section{ padding: 60px 0; }
  .frontend-section-header h2{ font-size: 28px; }
}

/* ====== FOOTER BACK TO UNIFIED STYLE (fallback) ====== */
.frontend-footer a{ text-decoration: none; }


/* ====== UTILITIES ====== */
.mt-sm { margin-top: 8px; }
.mt-md { margin-top: 16px; }
.mt-lg { margin-top: 24px; }
.mt-xl { margin-top: 32px; }

.mb-sm { margin-bottom: 8px; }
.mb-md { margin-bottom: 16px; }
.mb-lg { margin-bottom: 24px; }
.mb-xl { margin-bottom: 32px; }

.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }

.rounded { border-radius: var(--radius); }
.rounded-lg { border-radius: var(--radius-lg); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* ====== RESPONSIVE ====== */
@media (max-width: 768px) {
  .content-area {
    padding: 20px;
  }

  .page-header h2 {
    font-size: 24px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .frontend-hero h1 {
    font-size: 32px;
  }

  .btn {
    padding: 8px 14px;
    font-size: 13px;
  }
}