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

:root {
  --primary: #1a237e;
  --primary-light: #5c6bc0;
  --primary-bg: #e8eaf6;
  --accent: #e65100;
  --accent-light: #ff9800;
  --accent-bg: #fff3e0;
  --success: #059669;
  --success-bg: #ecfdf5;
  --warning: #d97706;
  --warning-bg: #fffbeb;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --sidebar-width: 250px;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: linear-gradient(180deg, #0d1b6f 0%, #1a237e 50%, #283593 100%);
  color: white;
  padding: 20px 0;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  display: flex;
  flex-direction: column;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px 16px;
}
.logo-icon { font-size: 28px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-title { font-size: 20px; font-weight: 800; color: var(--accent-light); letter-spacing: -0.5px; }
.logo-sub { font-size: 12px; font-weight: 500; color: rgba(255,255,255,0.7); }

.program-badge {
  margin: 0 20px 20px;
  padding: 6px 12px;
  background: var(--accent);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  color: white;
  letter-spacing: 0.5px;
}

.nav-links { list-style: none; flex: 1; }
.nav-links li {
  padding: 11px 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: all 0.2s;
  border-left: 3px solid transparent;
}
.nav-links li:hover { background: rgba(255,255,255,0.08); color: white; }
.nav-links li.active {
  background: rgba(255,152,0,0.15);
  color: var(--accent-light);
  border-left-color: var(--accent-light);
}
.nav-icon { font-size: 12px; width: 16px; text-align: center; }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.contact-info { font-size: 11px; color: rgba(255,255,255,0.5); line-height: 1.8; }

/* Content */
.content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 28px 36px;
  max-width: 1200px;
}

.page { display: none; }
.page.active { display: block; }

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.page-header h1 { font-size: 26px; font-weight: 700; color: var(--primary); }
.subtitle { color: var(--gray-500); font-size: 14px; margin-top: 2px; }

.header-badge {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  font-style: italic;
}

/* Program Banner */
.program-banner {
  background: linear-gradient(135deg, #1a237e 0%, #283593 60%, #3949ab 100%);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: white;
  box-shadow: var(--shadow-lg);
}
.banner-left h2 { font-size: 22px; margin-bottom: 4px; color: var(--accent-light); }
.banner-left p { font-size: 14px; opacity: 0.8; margin-bottom: 14px; }
.banner-features { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 13px; }
.banner-features span { opacity: 0.9; }
.banner-right { display: flex; flex-direction: column; gap: 10px; }

/* Buttons */
.btn {
  padding: 10px 20px;
  border-radius: 8px;
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  display: inline-block;
  text-align: center;
}
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: #bf4500; }
.btn-secondary { background: var(--gray-100); color: var(--gray-700); border: 1px solid var(--gray-200); }
.btn-secondary:hover { background: var(--gray-200); }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #b91c1c; }
.btn-outline { border: 2px solid white; color: white; background: transparent; }
.btn-outline:hover { background: rgba(255,255,255,0.15); }
.btn-whatsapp { background: #25d366; color: white; }
.btn-whatsapp:hover { background: #1da851; }
.btn-sm { padding: 6px 12px; font-size: 13px; }

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: white;
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--gray-200);
}
.stat-card.stat-teachers { border-left-color: var(--primary); }
.stat-card.stat-students { border-left-color: var(--success); }
.stat-card.stat-courses { border-left-color: var(--accent); }
.stat-card.stat-sessions { border-left-color: #8b5cf6; }
.stat-number { font-size: 30px; font-weight: 700; margin-bottom: 2px; }
.stat-label { color: var(--gray-500); font-size: 13px; }

/* Cards */
.card {
  background: white;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.card h3 { font-size: 16px; margin-bottom: 16px; color: var(--gray-700); }

.dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }

/* Search */
.search-bar { margin-bottom: 20px; }
.search-bar input {
  width: 100%;
  max-width: 400px;
  padding: 10px 16px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
.search-bar input:focus { border-color: var(--primary); }

/* Tables */
.table-container { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
th, td { padding: 12px 16px; text-align: left; font-size: 14px; }
th {
  background: var(--primary-bg);
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.05em;
}
td { border-top: 1px solid var(--gray-100); }
tr:hover td { background: var(--gray-50); }

/* Badges */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}
.badge-ap { background: var(--primary-bg); color: var(--primary); }
.badge-foundation { background: var(--accent-bg); color: var(--accent); }
.badge-sat { background: #fdf4ff; color: #9333ea; }
.badge-active { background: var(--success-bg); color: var(--success); }
.badge-inactive { background: var(--gray-100); color: var(--gray-500); }
.badge-paid { background: var(--success-bg); color: var(--success); }
.badge-pending { background: var(--warning-bg); color: var(--warning); }
.badge-1on1 { background: #f0e6ff; color: #7c3aed; }
.badge-group { background: #e0f2fe; color: #0284c7; }

/* Course Cards */
.course-card {
  background: white;
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
  border-top: 3px solid var(--primary);
}
.course-card.foundation { border-top-color: var(--accent); }
.course-card.sat { border-top-color: #9333ea; background: linear-gradient(135deg, #fdf4ff 0%, #fff 60%); }
.course-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.course-card h4 { font-size: 16px; margin-bottom: 8px; color: var(--primary); }
.course-card.foundation h4 { color: var(--accent); }
.course-card .course-meta { color: var(--gray-500); font-size: 13px; margin-bottom: 12px; }
.course-card .course-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--gray-100);
  font-size: 13px;
  color: var(--gray-500);
}
.course-wa-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: #25d366;
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 8px;
  transition: background 0.2s, color 0.2s;
}
.course-wa-btn:hover {
  background: #25d366;
  color: #fff;
}

/* SAT Highlight Banner */
.sat-highlight-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: linear-gradient(135deg, #6d28d9 0%, #9333ea 100%);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 20px;
  color: white;
}
.sat-banner-content { display: flex; align-items: center; gap: 14px; }
.sat-banner-icon { font-size: 32px; flex-shrink: 0; }
.sat-banner-title { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.sat-banner-desc { font-size: 13px; opacity: 0.85; line-height: 1.4; }
.sat-banner-btn {
  flex-shrink: 0;
  background: white !important;
  color: #7c3aed !important;
  border-color: white !important;
  font-weight: 700 !important;
  white-space: nowrap;
}
.sat-banner-btn:hover { background: #f5f3ff !important; }

/* Filter */
.courses-filter { display: flex; gap: 8px; margin-bottom: 20px; }
.filter-btn {
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid var(--gray-200);
  background: white;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}
.filter-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

/* Schedule */
.schedule-info { display: flex; gap: 10px; margin-bottom: 16px; }
.schedule-controls { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.week-label { font-size: 16px; font-weight: 600; color: var(--primary); }

.schedule-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
  background: white;
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.schedule-day { min-height: 120px; }
.schedule-day-header {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--gray-500);
  padding: 8px;
  text-align: center;
  border-bottom: 2px solid var(--gray-100);
  margin-bottom: 8px;
}
.schedule-day-header.today { color: var(--accent); border-bottom-color: var(--accent); }

.session-block {
  background: var(--primary-bg);
  border-left: 3px solid var(--primary);
  padding: 6px 8px;
  margin: 4px;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.2s;
}
.session-block:hover { background: #c5cae9; }
.session-block .session-time { font-weight: 600; color: var(--primary); }
.session-block .session-info { color: var(--gray-700); margin-top: 2px; }
.session-block.group-session { background: var(--accent-bg); border-left-color: var(--accent); }
.session-block.group-session .session-time { color: var(--accent); }

/* Pricing Grid */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.pricing-item {
  padding: 16px;
  background: var(--gray-50);
  border-radius: 8px;
  text-align: center;
}
.pricing-label { font-size: 13px; font-weight: 600; color: var(--gray-700); margin-bottom: 8px; }
.pricing-rate { font-size: 24px; font-weight: 800; color: var(--primary); margin-bottom: 6px; }
.pricing-desc { font-size: 12px; color: var(--gray-500); }

/* Billing */
.billing-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

/* Registration */
.registration-container { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
.registration-card { max-width: 100%; }

.reg-header {
  text-align: center;
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--accent-bg);
}
.reg-header h2 { font-size: 22px; color: var(--primary); margin-bottom: 4px; }
.reg-header p { color: var(--gray-500); font-style: italic; }
.reg-session-badge {
  display: inline-block;
  margin-top: 10px;
  padding: 6px 18px;
  background: var(--accent);
  color: white;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  cursor: pointer;
  padding: 6px 8px;
  border-radius: 6px;
  transition: background 0.2s;
}
.checkbox-label:hover { background: var(--gray-50); }
.checkbox-label input { accent-color: var(--primary); }

.reg-footer {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 2px solid var(--primary-bg);
  text-align: center;
}
.reg-footer h4 { color: var(--primary); margin-bottom: 10px; }
.reg-contact {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  margin-bottom: 10px;
}
.reg-contact a { color: var(--primary); text-decoration: none; }
.reg-contact a:hover { text-decoration: underline; }
.reg-batch-info {
  font-size: 12px;
  color: var(--gray-500);
  font-style: italic;
  margin-top: 8px;
}

.registrations-list-card { max-height: 600px; overflow-y: auto; }

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(4px);
}
.modal-overlay.open { display: flex; }
.modal {
  background: white;
  border-radius: var(--radius);
  width: 90%;
  max-width: 560px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--gray-100);
  background: var(--primary-bg);
}
.modal-header h2 { font-size: 18px; color: var(--primary); }
.modal-close { background: none; border: none; font-size: 24px; cursor: pointer; color: var(--gray-500); }
.modal-body { padding: 24px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--gray-700); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
  font-family: inherit;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 20px; }

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--gray-900);
  color: white;
  padding: 14px 24px;
  border-radius: 8px;
  font-size: 14px;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s;
  z-index: 2000;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

/* List items */
.list-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.list-item:last-child { border-bottom: none; }
.list-item-left { display: flex; flex-direction: column; gap: 2px; }
.list-item-title { font-size: 14px; font-weight: 500; }
.list-item-sub { font-size: 12px; color: var(--gray-500); }
.list-item-right { font-size: 12px; color: var(--gray-500); }

.empty-state { text-align: center; padding: 40px; color: var(--gray-500); }
.empty-state .empty-icon { font-size: 48px; margin-bottom: 12px; opacity: 0.3; }
.empty-state p { font-size: 14px; }

/* Actions */
.actions { display: flex; gap: 4px; }
.action-btn {
  padding: 4px 8px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  font-size: 13px;
  transition: background 0.2s;
}
.action-btn.edit { background: var(--primary-bg); color: var(--primary); }
.action-btn.edit:hover { background: #c5cae9; }
.action-btn.delete { background: var(--danger-bg); color: var(--danger); }
.action-btn.delete:hover { background: #fecaca; }

/* ── Dashboard Video ── */
.dashboard-video-section { margin-bottom: 28px; }
.dashboard-video-title { font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 12px; }
.dashboard-video-wrapper {
  position: relative;
  width: 100%;
  max-width: 720px;
  padding-top: 56.25%;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.dashboard-video-wrapper iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  border: none;
}

/* ── Feedback Page ── */
.dashboard-feedback-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 20px;
  align-items: start;
  margin-top: 20px;
}

.feedback-hero {
  text-align: center;
  padding-bottom: 24px;
  margin-bottom: 24px;
  border-bottom: 2px solid var(--gray-100);
}
.feedback-hero-stars {
  font-size: 28px;
  color: var(--accent-light);
  letter-spacing: 4px;
  margin-bottom: 10px;
}
.feedback-hero h2 { font-size: 22px; color: var(--primary); margin-bottom: 6px; }
.feedback-hero p { color: var(--gray-500); font-size: 14px; }

.feedback-section { margin-bottom: 24px; }
.feedback-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 10px;
}
.req { color: var(--danger); }
.optional-label { font-weight: 400; color: var(--gray-500); font-size: 12px; }

.role-toggle {
  display: flex;
  gap: 8px;
  background: var(--gray-100);
  padding: 4px;
  border-radius: 10px;
  width: fit-content;
}
.role-btn {
  padding: 8px 20px;
  border-radius: 8px;
  border: none;
  background: transparent;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-500);
  cursor: pointer;
  transition: all 0.2s;
}
.role-btn.active {
  background: white;
  color: var(--primary);
  font-weight: 700;
  box-shadow: 0 1px 4px rgba(0,0,0,0.12);
}

.star-rating {
  display: flex;
  gap: 6px;
  margin-bottom: 8px;
}
.star {
  font-size: 44px;
  color: var(--gray-200);
  cursor: pointer;
  transition: color 0.15s, transform 0.15s;
  line-height: 1;
  user-select: none;
}
.star:hover, .star.hovered, .star.selected { color: #f59e0b; }
.star:hover { transform: scale(1.15); }
.star.selected { transform: scale(1.05); }

.rating-hint {
  font-size: 14px;
  color: var(--gray-500);
  min-height: 20px;
  transition: all 0.2s;
  font-weight: 500;
}
.rating-hint.rated { color: var(--primary); }

.tag-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-chip {
  padding: 7px 14px;
  border-radius: 20px;
  border: 1.5px solid var(--gray-200);
  background: white;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-700);
  cursor: pointer;
  transition: all 0.15s;
  user-select: none;
}
.tag-chip:hover { border-color: var(--primary-light); color: var(--primary); background: var(--primary-bg); }
.tag-chip.selected { border-color: var(--primary); background: var(--primary-bg); color: var(--primary); font-weight: 600; }

.feedback-input {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s;
  background: white;
  resize: vertical;
}
.feedback-input:focus { border-color: var(--primary); }

.feedback-submit-btn { width: 100%; padding: 14px; font-size: 16px; border-radius: 10px; }

/* Reviews panel */
.feedback-reviews-card { position: sticky; top: 20px; }
.reviews-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.reviews-header h3 { margin-bottom: 0; }
.reviews-avg { text-align: right; }
.avg-score { font-size: 28px; font-weight: 800; color: var(--primary); display: block; line-height: 1; }
.avg-stars { color: #f59e0b; font-size: 16px; letter-spacing: 1px; }
.avg-count { font-size: 12px; color: var(--gray-500); display: block; }

.review-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--gray-100);
}
.review-item:last-child { border-bottom: none; }
.review-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.review-name { font-size: 14px; font-weight: 600; color: var(--gray-700); }
.review-stars { color: #f59e0b; font-size: 14px; letter-spacing: 1px; }
.review-meta { font-size: 12px; color: var(--gray-500); margin-bottom: 6px; }
.review-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 6px; }
.review-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  background: var(--primary-bg);
  color: var(--primary);
  font-weight: 500;
}
.review-comment { font-size: 13px; color: var(--gray-700); line-height: 1.5; font-style: italic; }

/* Responsive */
@media (max-width: 1100px) {
  .dashboard-feedback-grid { grid-template-columns: 1fr; }
  .feedback-reviews-card { position: static; }
}
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-grid { grid-template-columns: 1fr; }
  .billing-summary { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; }
  .registration-container { grid-template-columns: 1fr; }
  .program-banner { flex-direction: column; gap: 16px; }
}
@media (max-width: 768px) {
  .sidebar { width: 60px; padding: 16px 0; }
  .logo-text, .program-badge, .sidebar-footer { display: none; }
  .logo { padding: 0 12px 24px; justify-content: center; }
  .nav-links li { padding: 12px; justify-content: center; }
  .nav-links li span:not(.nav-icon) { display: none; }
  .content { margin-left: 60px; padding: 20px; }
  .schedule-grid { grid-template-columns: repeat(3, 1fr); }
  .header-badge { display: none; }
  .checkbox-grid { grid-template-columns: 1fr; }
}