/* ==========================================================================
   ZIN-NUR AKADEMIYASI - ADMIN DASHBOARD STYLESHEET
   Brand Palette: Emerald #0F8A5F, Deep Emerald #0B6B49, Ink #04231A, Mint #E8F8F1
   ========================================================================== */

:root {
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: 'Bricolage Grotesque', sans-serif;

  --emerald-900: #04231A;
  --emerald-800: #072B20;
  --emerald-700: #0B6B49;
  --emerald-600: #0F8A5F;
  --emerald-500: #10B981;
  --emerald-400: #3DD68C;
  --emerald-100: #D1FAE5;
  --mint-50: #E8F8F1;
  --mint-100: #DCF3E9;

  --radius-xl: 20px;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --radius-full: 9999px;

  --transition-fast: 0.18s ease;
  --transition-normal: 0.26s ease;
}

/* LIGHT THEME */
html[data-theme="light"] {
  --bg-app: #F8FAF9;
  --bg-surface: #FFFFFF;
  --bg-sidebar: #062319;
  --sidebar-text: #E6F4EE;
  --sidebar-text-muted: #8EABA0;
  --sidebar-hover: rgba(255, 255, 255, 0.07);
  --sidebar-active: #0F8A5F;

  --text-main: #0B291F;
  --text-soft: #52675E;
  --text-muted: #849990;

  --border-color: #E2EBE6;
  --border-hover: #CBD9D1;

  --card-bg: #FFFFFF;
  --card-shadow: 0 4px 20px rgba(11, 41, 31, 0.05), 0 1px 3px rgba(11, 41, 31, 0.03);
  --modal-overlay: rgba(4, 35, 26, 0.65);

  --table-header-bg: #F3F8F5;
  --table-hover-row: #F7FCFA;
  --table-border: #E8F0EB;

  --input-bg: #FFFFFF;
  --input-border: #D2E0D8;
  --input-focus-border: #0F8A5F;
}

/* DARK THEME */
html[data-theme="dark"] {
  --bg-app: #071712;
  --bg-surface: #0E221B;
  --bg-sidebar: #05140F;
  --sidebar-text: #E6F4EE;
  --sidebar-text-muted: #7E9C91;
  --sidebar-hover: rgba(255, 255, 255, 0.05);
  --sidebar-active: #0F8A5F;

  --text-main: #EAF7F1;
  --text-soft: #A3BD82;
  --text-muted: #738F84;

  --border-color: #1A362D;
  --border-hover: #294D41;

  --card-bg: #0E221B;
  --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  --modal-overlay: rgba(0, 0, 0, 0.8);

  --table-header-bg: #0A1B15;
  --table-hover-row: #122B22;
  --table-border: #183329;

  --input-bg: #091A14;
  --input-border: #224237;
  --input-focus-border: #3DD68C;
}

/* RESET & BASE */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
}

/* ==========================================================================
   AUTH SCREEN
   ========================================================================== */
.auth-screen {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: radial-gradient(circle at 50% 20%, #104C37 0%, #04231A 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
  animation: authFadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes authFadeIn {
  from { opacity: 0; transform: translateY(20px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}

.logo-mark {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--emerald-600), var(--emerald-800));
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  box-shadow: 0 8px 18px rgba(15, 138, 95, 0.35);
  flex-shrink: 0;
}

.auth-title-box h2 {
  font-size: 1.35rem;
  color: #04231A;
}

.auth-title-box em {
  font-style: normal;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--emerald-600);
  font-family: var(--font-primary);
  display: block;
}

.auth-title-box p {
  font-size: 0.86rem;
  color: #55685F;
  margin-top: 2px;
}

.pin-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.pin-input-wrap input {
  width: 100%;
  padding: 13px 44px 13px 16px;
  font-size: 1.15rem;
  letter-spacing: 0.1em;
  border: 2px solid #DCE6E1;
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--transition-fast);
}

.pin-input-wrap input:focus {
  border-color: var(--emerald-600);
}

.btn-toggle-eye {
  position: absolute;
  right: 12px;
  background: transparent;
  border: none;
  color: #8A9C93;
  cursor: pointer;
  padding: 4px;
  display: flex;
}

.btn-toggle-eye svg {
  width: 20px;
  height: 20px;
}

.btn-toggle-eye .eye-closed {
  display: none;
}

.pin-visible .eye-open {
  display: none;
}

.pin-visible .eye-closed {
  display: block;
}

.auth-hint {
  font-size: 0.78rem;
  color: #738A80;
  margin-top: 8px;
}

.auth-error {
  display: none;
  font-size: 0.84rem;
  font-weight: 600;
  color: #DC2626;
  background: #FEE2E2;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-top: 14px;
  text-align: center;
}

/* ==========================================================================
   APP LAYOUT & SIDEBAR
   ========================================================================== */
.app-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 280px;
  background: var(--bg-sidebar);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: transform var(--transition-normal);
}

.sidebar-header {
  padding: 24px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-brand .brand-text h3 {
  font-size: 1.15rem;
  color: #FFFFFF;
}

.sidebar-brand .brand-text span {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--emerald-400);
}

.sidebar-close-mobile {
  display: none;
}

.sidebar-nav {
  flex: 1;
  padding: 18px 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: transparent;
  border: none;
  color: var(--sidebar-text-muted);
  font-family: var(--font-primary);
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  width: 100%;
  text-align: left;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.nav-item:hover {
  background: var(--sidebar-hover);
  color: #FFFFFF;
}

.nav-item.active {
  background: var(--sidebar-active);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(15, 138, 95, 0.35);
}

.nav-badge {
  margin-left: auto;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
}

.nav-badge.highlight {
  background: #3DD68C;
  color: #04231A;
  font-weight: 700;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.live-status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--sidebar-text-muted);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--emerald-400);
  box-shadow: 0 0 0 0 rgba(61, 214, 140, 0.7);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { box-shadow: 0 0 0 0 rgba(61, 214, 140, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(61, 214, 140, 0); }
  100% { box-shadow: 0 0 0 0 rgba(61, 214, 140, 0); }
}

/* ==========================================================================
   MAIN WRAPPER & TOPBAR
   ========================================================================== */
.main-wrapper {
  margin-left: 280px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 90;
  height: 74px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.mobile-menu-btn {
  display: none;
}

.page-title-box h1 {
  font-size: 1.35rem;
  color: var(--text-main);
}

.page-title-box p {
  font-size: 0.82rem;
  color: var(--text-soft);
}

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

.direct-site-btn {
  text-decoration: none;
}

.lang-picker {
  display: flex;
  background: var(--bg-app);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 2px;
  gap: 2px;
}

.lang-btn {
  border: none;
  background: transparent;
  color: var(--text-soft);
  font-family: var(--font-primary);
  font-size: 0.74rem;
  font-weight: 700;
  padding: 5px 9px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-btn.active {
  background: var(--emerald-600);
  color: #FFFFFF;
}

.theme-toggle-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast);
}

.theme-toggle-btn:hover {
  transform: scale(1.05);
}

.theme-toggle-btn svg {
  width: 18px;
  height: 18px;
}

html[data-theme="light"] .theme-toggle-btn .icon-sun { display: none; }
html[data-theme="dark"] .theme-toggle-btn .icon-moon { display: none; }

/* ==========================================================================
   CONTENT BODY & TABS
   ========================================================================== */
.content-body {
  flex: 1;
  padding: 28px;
}

.tab-pane {
  display: none;
  animation: tabFade 0.3s ease forwards;
}

.tab-pane.active {
  display: block;
}

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

/* ==========================================================================
   CARDS & GRIDS
   ========================================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  box-shadow: var(--card-shadow);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon svg {
  width: 26px;
  height: 26px;
}

.stat-icon.emerald { background: var(--mint-50); color: var(--emerald-600); }
.stat-icon.blue { background: #EFF6FF; color: #2563EB; }
.stat-icon.purple { background: #F5F3FF; color: #7C3AED; }
.stat-icon.amber { background: #FFFBEB; color: #D97706; }

html[data-theme="dark"] .stat-icon.emerald { background: rgba(16, 185, 129, 0.15); color: #3DD68C; }
html[data-theme="dark"] .stat-icon.blue { background: rgba(37, 99, 235, 0.15); color: #60A5FA; }
html[data-theme="dark"] .stat-icon.purple { background: rgba(124, 58, 237, 0.15); color: #A78BFA; }
html[data-theme="dark"] .stat-icon.amber { background: rgba(217, 119, 6, 0.15); color: #FBBF24; }

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

.stat-label {
  font-size: 0.8rem;
  color: var(--text-soft);
  font-weight: 500;
}

.stat-val {
  font-size: 1.65rem;
  font-family: var(--font-heading);
  color: var(--text-main);
  line-height: 1.1;
  margin: 3px 0 2px;
}

.stat-sub {
  font-size: 0.74rem;
  color: var(--text-muted);
}

.dashboard-split {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  overflow: hidden;
}

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

.card-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h3 {
  font-size: 1.05rem;
  color: var(--text-main);
}

.card-body {
  padding: 22px;
}

.quick-actions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.quick-action-btn {
  background: var(--bg-app);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all var(--transition-fast);
}

.quick-action-btn:hover {
  background: var(--bg-surface);
  border-color: var(--emerald-600);
  transform: translateY(-2px);
}

.qa-icon {
  color: var(--emerald-600);
  margin-bottom: 2px;
}

.qa-icon svg {
  width: 22px;
  height: 22px;
}

.quick-action-btn strong {
  font-size: 0.92rem;
  color: var(--text-main);
}

.quick-action-btn span {
  font-size: 0.78rem;
  color: var(--text-soft);
}

/* ==========================================================================
   BUTTONS & FORM CONTROLS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-primary);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--emerald-600);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: var(--emerald-700);
}

.btn-outline {
  background: transparent;
  border-color: var(--border-color);
  color: var(--text-main);
}

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

.btn-danger {
  background: #DC2626;
  color: #FFFFFF;
}

.btn-danger:hover {
  background: #B91C1C;
}

.btn-sm {
  padding: 7px 13px;
  font-size: 0.82rem;
}

.btn-xs {
  padding: 4px 9px;
  font-size: 0.74rem;
}

.btn-block {
  width: 100%;
}

.btn-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.btn-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}

.form-group label .req {
  color: #DC2626;
}

.form-control, .form-select {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font-primary);
  font-size: 0.92rem;
  border: 1.5px solid var(--input-border);
  border-radius: var(--radius-md);
  background: var(--input-bg);
  color: var(--text-main);
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-control:focus, .form-select:focus {
  border-color: var(--input-focus-border);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.tab-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.search-filter-box {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-input-wrap {
  position: relative;
  min-width: 260px;
}

.search-input-wrap svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 17px;
  height: 17px;
  color: var(--text-muted);
}

.search-input-wrap input {
  width: 100%;
  padding: 9px 14px 9px 36px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-main);
  font-size: 0.88rem;
  outline: none;
}

.search-input-wrap input:focus {
  border-color: var(--emerald-600);
}

.section-banner {
  background: var(--mint-50);
  border: 1px solid var(--mint-100);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}

html[data-theme="dark"] .section-banner {
  background: rgba(15, 138, 95, 0.12);
  border-color: rgba(15, 138, 95, 0.25);
}

.banner-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--emerald-600);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.banner-icon svg {
  width: 20px;
  height: 20px;
}

.section-banner h3 {
  font-size: 1.05rem;
  color: var(--text-main);
  margin-bottom: 4px;
}

.section-banner p {
  font-size: 0.85rem;
  color: var(--text-soft);
}

/* ==========================================================================
   TEACHERS CARDS & GRID
   ========================================================================== */
.teachers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 20px;
}

.teacher-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  padding: 20px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
}

.teacher-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
}

.teacher-card-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.teacher-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--emerald-600), var(--emerald-800));
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.teacher-name-box h4 {
  font-size: 1.05rem;
  color: var(--text-main);
}

.teacher-hours-badge {
  font-size: 0.74rem;
  color: var(--emerald-700);
  font-weight: 600;
  background: var(--mint-50);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  display: inline-block;
  margin-top: 2px;
}

html[data-theme="dark"] .teacher-hours-badge {
  background: rgba(61, 214, 140, 0.15);
  color: var(--emerald-400);
}

.teacher-courses-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
  flex: 1;
}

.course-tag {
  font-size: 0.74rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--bg-app);
  color: var(--text-soft);
  border: 1px solid var(--border-color);
}

.teacher-card-schedule {
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
  margin-bottom: 14px;
  font-size: 0.8rem;
  color: var(--text-soft);
}

.teacher-card-schedule strong {
  color: var(--text-main);
}

.teacher-card-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
}

.teacher-quick-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.t-quick-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  background: var(--bg-app);
  border: 1px solid var(--border-color);
}

.t-quick-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.t-quick-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--emerald-600);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  font-weight: 700;
}

/* ==========================================================================
   SCHEDULE & BOOKINGS TABLES
   ========================================================================== */
.schedule-table-wrap, .bookings-table-wrap {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  overflow-x: auto;
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.custom-table th {
  background: var(--table-header-bg);
  color: var(--text-soft);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 14px 18px;
  border-bottom: 1px solid var(--table-border);
  white-space: nowrap;
}

.custom-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--table-border);
  color: var(--text-main);
  vertical-align: middle;
}

.custom-table tr:hover td {
  background: var(--table-hover-row);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.76rem;
  font-weight: 700;
}

.status-badge.new { background: #DBEAFE; color: #1E40AF; }
.status-badge.contacted { background: #FEF3C7; color: #92400E; }
.status-badge.confirmed { background: #DCFCE7; color: #166534; }
.status-badge.cancelled { background: #FEE2E2; color: #991B1B; }

/* ==========================================================================
   COURSES & HOLIDAYS MANAGEMENT
   ========================================================================== */
.courses-management-grid, .holidays-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.course-config-card, .holiday-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
}

.course-config-header, .holiday-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.course-config-header h4, .holiday-card-header h4 {
  font-size: 1.05rem;
  color: var(--text-main);
}

.holiday-date-pill {
  font-size: 1.15rem;
  font-weight: 700;
  font-family: var(--font-heading);
  color: #DC2626;
  margin-bottom: 6px;
}

/* ==========================================================================
   DAYS TOGGLE BUTTONS & CHECKBOX LIST
   ========================================================================== */
.days-toggle-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.day-toggle-btn {
  padding: 8px 12px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-soft);
  font-family: var(--font-primary);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.day-toggle-btn.active {
  background: var(--emerald-600);
  border-color: var(--emerald-700);
  color: #FFFFFF;
}

.field-hint {
  display: block;
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 180px;
  overflow-y: auto;
  padding: 8px 12px;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-app);
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  cursor: pointer;
}

.checkbox-item input[type="checkbox"] {
  width: 17px;
  height: 17px;
  accent-color: var(--emerald-600);
  cursor: pointer;
}

/* ==========================================================================
   CODE GENERATOR & SYNC TAB
   ========================================================================== */
.sync-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.code-tab-switch {
  display: flex;
  background: var(--bg-app);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: 4px;
}

.code-tab-btn {
  border: none;
  background: transparent;
  color: var(--text-soft);
  font-family: var(--font-primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.code-tab-btn.active {
  background: var(--emerald-600);
  color: #FFFFFF;
}

.code-box-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 0.84rem;
  color: var(--text-soft);
}

.code-textarea {
  width: 100%;
  font-family: Consolas, Monaco, "Courier New", monospace;
  font-size: 0.84rem;
  line-height: 1.45;
  background: #061811;
  color: #83F1BD;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid #143828;
  resize: vertical;
  outline: none;
}

/* ==========================================================================
   MODALS & CONFIRM DIALOGS
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: var(--modal-overlay);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

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

.modal-box {
  width: 100%;
  max-width: 520px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
  transform: translateY(16px) scale(0.96);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.show .modal-box {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-header h3 {
  font-size: 1.2rem;
  color: var(--text-main);
}

.modal-close-btn {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-close-btn:hover {
  color: #DC2626;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}

.modal-footer.justify-center {
  justify-content: center;
}

.confirm-box {
  max-width: 420px;
  text-align: center;
}

.confirm-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #FEE2E2;
  color: #DC2626;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.confirm-icon svg {
  width: 28px;
  height: 28px;
}

.confirm-box h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.confirm-box p {
  font-size: 0.88rem;
  color: var(--text-soft);
}

/* ==========================================================================
   TOAST NOTIFICATIONS
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--emerald-600);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  color: var(--text-main);
  font-size: 0.88rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 280px;
  animation: toastSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.toast.error {
  border-left-color: #DC2626;
}

@keyframes toastSlideIn {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 992px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
  }

  .sidebar-close-mobile {
    display: flex;
    color: #fff;
  }

  .main-wrapper {
    margin-left: 0;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .dashboard-split, .sync-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .topbar {
    padding: 0 16px;
    height: 64px;
  }

  .content-body {
    padding: 16px;
  }

  .form-row, .quick-actions-grid {
    grid-template-columns: 1fr;
  }

  .tab-top-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .search-filter-box {
    flex-direction: column;
    align-items: stretch;
  }

  .direct-site-btn span {
    display: none;
  }
}