/* =======================================================
   منصة مستر أدهم رشدي - Admin Dashboard Stylesheet
   ======================================================= */

:root {
  --bg-dark: #070b12;
  --bg-sidebar: #090e18;
  --bg-card: #0d1525;
  --bg-card-hover: #121c32;
  --bg-surface: #101a2e;
  --border: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(245, 158, 11, 0.4);
  
  --gold: #f59e0b;
  --gold-light: #fbbf24;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --danger: #ef4444;
  --success: #10b981;
  --blue: #38bdf8;
  --purple: #a855f7;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;
  
  --font-main: 'Alexandria', 'Cairo', sans-serif;
  --font-body: 'Cairo', sans-serif;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  direction: rtl;
  text-align: right;
  min-height: 100vh;
}

/* ================= Lock Screen ================= */
.lock-screen {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at center, #101b33 0%, #060a12 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 20px;
}

.lock-card {
  background: var(--bg-card);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-xl);
  padding: 40px;
  width: 100%;
  max-width: 440px;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7), 0 0 30px rgba(245, 158, 11, 0.15);
}

.lock-icon {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--gold-light);
  font-size: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.lock-card h2 {
  font-family: var(--font-main);
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.lock-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.lock-error {
  margin-top: 14px;
  font-size: 0.88rem;
  color: var(--danger);
  display: none;
}

.lock-error.show {
  display: block;
}

.back-home-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-decoration: none;
  transition: 0.2s;
}

.back-home-link:hover {
  color: var(--gold-light);
}

/* ================= Admin Layout ================= */
.admin-wrapper {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

/* Sidebar */
.admin-sidebar {
  background: var(--bg-sidebar);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px 18px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

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

.sidebar-logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--gold-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.sidebar-brand strong {
  display: block;
  font-family: var(--font-main);
  font-size: 1.05rem;
  color: #fff;
}

.sidebar-brand small {
  font-size: 0.75rem;
  color: var(--gold-light);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-grow: 1;
}

.nav-tab-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-family: var(--font-main);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  text-align: right;
  transition: all 0.25s ease;
  width: 100%;
}

.nav-tab-btn i {
  font-size: 1.1rem;
  width: 22px;
  text-align: center;
}

.nav-tab-btn:hover {
  background: rgba(255, 255, 255, 0.04);
  color: #ffffff;
}

.nav-tab-btn.active {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(245, 158, 11, 0.05));
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--gold-light);
}

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

/* Topbar */
.admin-main {
  background: var(--bg-dark);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.admin-topbar {
  background: rgba(13, 21, 37, 0.7);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 20px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-title h1 {
  font-family: var(--font-main);
  font-size: 1.5rem;
  color: #fff;
  margin-bottom: 2px;
}

.topbar-title p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Main Content */
.admin-content-container {
  padding: 32px;
  flex-grow: 1;
}

.admin-tab-content {
  display: none;
}

.admin-tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

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

/* Stats Overview */
.stats-overview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.stat-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.stat-icon-gold { background: rgba(245, 158, 11, 0.15); color: var(--gold-light); }
.stat-icon-blue { background: rgba(56, 189, 248, 0.15); color: var(--blue); }
.stat-icon-cyan { background: rgba(6, 182, 212, 0.15); color: #22d3ee; }
.stat-icon-amber { background: rgba(245, 158, 11, 0.18); color: #fbbf24; }
.stat-icon-purple { background: rgba(168, 85, 247, 0.15); color: var(--purple); }
.stat-icon-green { background: rgba(16, 185, 129, 0.15); color: var(--success); }

.stat-card-highlight {
  border: 1px solid rgba(245, 158, 11, 0.35);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.08) 0%, var(--bg-card) 100%);
}

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.stat-val {
  font-family: var(--font-main);
  font-size: 1.8rem;
  font-weight: 800;
  color: #ffffff;
}

.quick-actions-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
}

.quick-actions-card h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.quick-actions-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.quick-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ================= Students Management Section ================= */
.students-stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.student-mini-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.student-mini-stat .label {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.student-mini-stat strong {
  font-family: var(--font-main);
  font-size: 1.6rem;
  color: var(--text-primary);
}

.table-filters-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.search-input-wrap {
  position: relative;
  flex: 1;
  min-width: 280px;
}

.search-input-wrap i {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.search-input-wrap input {
  width: 100%;
  padding: 12px 42px 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.92rem;
  outline: none;
  transition: 0.25s;
}

.search-input-wrap input:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}

.filter-dropdowns {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-dropdowns select {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: #cbd5e1;
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: 0.88rem;
  outline: none;
  cursor: pointer;
}

.filter-dropdowns select:focus {
  border-color: var(--gold);
}

/* Table */
.table-responsive-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}

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

.admin-data-table th {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.82rem;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.admin-data-table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: #cbd5e1;
  vertical-align: middle;
}

.admin-data-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.student-name-cell {
  display: flex;
  align-items: center;
  gap: 12px;
}

.student-avatar-letter {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.15);
  color: var(--gold-light);
  border: 1px solid rgba(245, 158, 11, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.badge-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 99px;
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
}

.badge-status-active {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-status-pending {
  background: rgba(245, 158, 11, 0.15);
  color: var(--gold-light);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-status-suspended {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-whatsapp-direct {
  background: rgba(37, 211, 102, 0.15);
  border: 1px solid rgba(37, 211, 102, 0.3);
  color: #25d366;
  padding: 6px 10px;
  font-size: 0.82rem;
}

.btn-whatsapp-direct:hover {
  background: #25d366;
  color: #000;
}

@media (max-width: 1024px) {
  .students-stats-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Toolbar & Section Headers */
.section-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.section-toolbar h2 {
  font-family: var(--font-main);
  font-size: 1.4rem;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
}

.admin-item-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  position: relative;
  transition: all 0.25s ease;
}

.admin-item-card:hover {
  border-color: rgba(245, 158, 11, 0.3);
  transform: translateY(-2px);
}

.item-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.item-tag {
  background: rgba(245, 158, 11, 0.15);
  color: var(--gold-light);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
}

.item-card-body h4 {
  font-size: 1.15rem;
  margin-bottom: 6px;
}

.item-card-body p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.item-card-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  gap: 14px;
  margin-top: 10px;
}

.item-card-actions {
  display: flex;
  gap: 10px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

/* FAQ Admin List */
.faq-admin-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-admin-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.faq-admin-content h4 {
  font-size: 1.05rem;
  color: var(--gold-light);
  margin-bottom: 6px;
}

.faq-admin-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Settings Form */
.settings-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px;
  max-width: 800px;
}

.settings-card h2 {
  margin-bottom: 4px;
}

.settings-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: #cbd5e1;
  display: flex;
  align-items: center;
  gap: 6px;
}

.form-group input, .form-group textarea, .form-group select {
  background: #080d16;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: #ffffff;
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: 0.25s;
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
}

.btn-gold {
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: #000;
  font-weight: 700;
}

.btn-gold:hover {
  background: linear-gradient(135deg, #fde047, var(--gold-light));
  transform: translateY(-2px);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: #ffffff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-outline-light {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: #cbd5e1;
}

.btn-outline-light:hover {
  color: #ffffff;
  border-color: var(--gold);
}

.btn-edit {
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--blue);
  padding: 6px 14px;
  font-size: 0.82rem;
}

.btn-edit:hover {
  background: var(--blue);
  color: #000;
}

.btn-delete {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--danger);
  padding: 6px 14px;
  font-size: 0.82rem;
}

.btn-delete:hover {
  background: var(--danger);
  color: #fff;
}

.btn-reset {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.25);
  color: #fca5a5;
  font-size: 0.85rem;
}

.btn-reset:hover {
  background: var(--danger);
  color: #fff;
}

.btn-logout {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.btn-logout:hover {
  background: var(--danger);
  color: #fff;
}

.w-100 { width: 100%; }
.mb-2 { margin-bottom: 0.5rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.text-gold { color: var(--gold-light); }
.text-success { color: var(--success); }

/* Modals */
.admin-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.admin-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.admin-modal-card {
  background: #0d1525;
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-xl);
  padding: 34px;
  width: 100%;
  max-width: 520px;
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-close {
  position: absolute;
  top: 16px;
  left: 20px;
  background: transparent;
  border: none;
  color: #94a3b8;
  font-size: 1.8rem;
  cursor: pointer;
}

.modal-close:hover {
  color: #ffffff;
}

.admin-modal-card h3 {
  font-family: var(--font-main);
  font-size: 1.3rem;
  margin-bottom: 20px;
  color: var(--gold-light);
}

/* Responsive */
@media (max-width: 1024px) {
  .admin-wrapper {
    grid-template-columns: 1fr;
  }
  .admin-sidebar {
    height: auto;
    position: static;
  }
  .stats-overview-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .stats-overview-grid {
    grid-template-columns: 1fr;
  }
  .admin-topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
  .topbar-actions {
    width: 100%;
    justify-content: space-between;
  }
}

/* ================= Password Field Cell & Toggle ================= */
.pwd-field-cell {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-family: monospace;
  font-size: 0.9rem;
}

.btn-pwd-eye {
  background: transparent;
  border: none;
  color: var(--gold-light);
  cursor: pointer;
  padding: 2px;
  font-size: 0.85rem;
  transition: 0.2s;
}

.btn-pwd-eye:hover {
  transform: scale(1.15);
  color: #fff;
}

/* ================= Support Chat Admin Panel ================= */
.chat-admin-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  height: 520px;
  overflow: hidden;
}

.chat-admin-messages-box {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: #080d17;
}

.admin-chat-msg {
  max-width: 70%;
  display: flex;
  flex-direction: column;
}

.admin-chat-msg.msg-student {
  align-self: flex-start;
}

.admin-chat-msg.msg-student .chat-msg-content {
  background: #162238;
  color: #f8fafc;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px 16px 16px 4px;
  padding: 12px 16px;
  font-size: 0.9rem;
}

.admin-chat-msg.msg-admin {
  align-self: flex-end;
}

.admin-chat-msg.msg-admin .chat-msg-content {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.25), rgba(245, 158, 11, 0.1));
  color: #fef08a;
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: 16px 16px 4px 16px;
  padding: 12px 16px;
  font-size: 0.9rem;
}

.chat-msg-author {
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.msg-student .chat-msg-author { color: #38bdf8; }
.msg-admin .chat-msg-author { color: var(--gold-light); }

/* ================= Multi-Student Messenger Layout ================= */
.chat-messenger-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  height: 620px;
  max-height: calc(100vh - 220px);
  min-height: 520px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* Sidebar */
.chat-threads-sidebar {
  background: #090e18;
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

.threads-header {
  flex-shrink: 0;
  padding: 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.threads-count-badge {
  background: rgba(245, 158, 11, 0.15);
  color: var(--gold-light);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 99px;
}

.threads-search-wrap {
  position: relative;
}

.threads-search-wrap i {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.threads-search-wrap input {
  width: 100%;
  background: #0d1525;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 8px 36px 8px 12px;
  color: #fff;
  font-size: 0.85rem;
  outline: none;
}

.threads-search-wrap input:focus {
  border-color: var(--gold);
}

.threads-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.thread-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  cursor: pointer;
  transition: 0.2s;
  position: relative;
}

.thread-item:hover {
  background: rgba(255, 255, 255, 0.03);
}

.thread-item.active {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.15) 0%, rgba(245, 158, 11, 0.04) 100%);
  border-right: 3px solid var(--gold);
}

.thread-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.15);
  color: var(--gold-light);
  border: 1px solid rgba(245, 158, 11, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  flex-shrink: 0;
}

.thread-avatar.guest {
  background: rgba(148, 163, 184, 0.15);
  color: #94a3b8;
  border-color: rgba(148, 163, 184, 0.3);
}

.thread-info {
  flex: 1;
  min-width: 0;
}

.thread-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.thread-name {
  font-size: 0.92rem;
  color: #fff;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.thread-time {
  font-size: 0.72rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.thread-snippet {
  font-size: 0.8rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Active Pane */
.chat-active-pane {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  background: #0d1525;
  overflow: hidden;
  position: relative;
}

.active-chat-header {
  flex-shrink: 0;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: #090e18;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 5;
}

.active-student-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.active-student-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.2);
  color: var(--gold-light);
  border: 1px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.active-chat-messages {
  flex: 1 1 auto;
  min-height: 0;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: #080d16;
}

.active-chat-reply-form {
  flex-shrink: 0;
  padding: 14px 20px;
  background: #090e18;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  align-items: center;
  z-index: 10;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
}

.active-chat-reply-form input {
  flex: 1;
  background: #0d1525;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  color: #fff;
  font-size: 0.92rem;
  outline: none;
}

.active-chat-reply-form input:focus {
  border-color: var(--gold);
}

/* Floating Toast Notifications for Admin */
.toast-container {
  position: fixed;
  top: 24px;
  left: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast-item {
  background: #0d1525;
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: var(--radius-md);
  padding: 14px 22px;
  color: #ffffff;
  font-size: 0.92rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  gap: 12px;
  pointer-events: auto;
  animation: slideInLeft 0.3s ease;
  min-width: 280px;
}

.toast-item.toast-success {
  border-color: rgba(16, 185, 129, 0.4);
  background: #061912;
}

.toast-item.toast-info {
  border-color: rgba(245, 158, 11, 0.4);
  background: #191206;
}

@keyframes slideInLeft {
  from { transform: translateX(-100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@media (max-width: 900px) {
  .chat-messenger-layout {
    grid-template-columns: 1fr;
    height: auto;
  }
  .chat-threads-sidebar {
    height: 240px;
  }
  .chat-active-pane {
    height: 480px;
  }
}