/* ============================================================
   TutorGali — Main Design System
   Single source of truth for all shared styles
   ============================================================ */

/* ── Google Fonts: Inter ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* ── Design Tokens ── */
:root {
  --primary:        #2563eb;
  --primary-dark:   #1d4ed8;
  --secondary:      #1e3a8a;
  --gradient:       linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
  --gradient-soft:  linear-gradient(135deg, #eff4ff 0%, #eef2ff 100%);
  --success:        #10b981;
  --success-bg:     #ecfdf5;
  --success-border: #a7f3d0;
  --danger:         #ef4444;
  --danger-bg:      #fef2f2;
  --danger-border:  #fecaca;
  --warning:        #f59e0b;
  --warning-bg:     #fffbeb;
  --warning-border: #fde68a;
  --info:           #3b82f6;
  --info-bg:        #eff6ff;
  --info-border:    #bfdbfe;
  --text-primary:   #111827;
  --text-secondary: #6b7280;
  --text-muted:     #9ca3af;
  --border:         #e5e7eb;
  --border-focus:   #2563eb;
  --bg-page:        #f1f5f9;
  --bg-card:        #ffffff;
  --bg-input:       #f9fafb;
  --radius-xs:      6px;
  --radius-sm:      10px;
  --radius-md:      16px;
  --radius-lg:      24px;
  --radius-xl:      32px;
  --shadow-xs:      0 1px 3px rgba(0,0,0,0.06);
  --shadow-sm:      0 2px 8px rgba(0,0,0,0.07);
  --shadow-md:      0 8px 24px rgba(0,0,0,0.10);
  --shadow-lg:      0 20px 50px rgba(0,0,0,0.13);
  --shadow-primary: 0 8px 24px rgba(37,99,235,0.30);
  --nav-height:     68px;
  --transition:     all 0.22s ease;
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-page);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }

/* ── Navbar ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  height: var(--nav-height);
}

.navbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  flex-shrink: 0;
}

.navbar-brand i {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 1.5rem;
}

.navbar-brand-logo {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.navbar-links a,
.navbar-links .nav-user-name {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition);
  white-space: nowrap;
}

.navbar-links a:hover {
  background: var(--gradient-soft);
  color: var(--primary);
}

.navbar-links .nav-user-name {
  color: var(--text-secondary);
  font-weight: 600;
  cursor: default;
}

.navbar-links .nav-user-name i { color: var(--primary); }

.nav-btn-logout {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--danger-bg);
  color: var(--danger) !important;
  border: 1px solid var(--danger-border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

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

.nav-btn-register {
  background: var(--gradient) !important;
  color: #fff !important;
  border-radius: var(--radius-sm);
  padding: 8px 18px !important;
  font-weight: 600 !important;
  box-shadow: var(--shadow-primary);
}

.nav-btn-register:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  color: #fff !important;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  cursor: pointer;
  padding: 6px;
  transition: var(--transition);
}

.hamburger:hover { background: var(--gradient-soft); border-color: var(--primary); }

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  z-index: 999;
  padding: 12px 16px 20px;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav.open { display: flex; }

.mobile-nav a,
.mobile-nav .nav-user-name {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: var(--transition);
}

.mobile-nav a:hover { background: var(--gradient-soft); color: var(--primary); }
.mobile-nav .nav-user-name { color: var(--text-secondary); font-weight: 600; cursor: default; }
.mobile-nav .nav-divider { height: 1px; background: var(--border); margin: 8px 0; }

.mobile-nav .nav-btn-logout {
  width: 100%;
  justify-content: center;
  margin-top: 4px;
}

.mobile-nav .nav-btn-register {
  width: 100%;
  justify-content: center;
  background: var(--gradient) !important;
  color: #fff !important;
  padding: 12px 16px !important;
}

/* ── Page Layout ── */
.page-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 60px;
}

.page-wrapper-sm {
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 24px 60px;
}

.page-wrapper-md {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 24px 60px;
}

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 28px;
}

.card-lg { padding: 36px; }
.card-sm { padding: 20px; }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-title i { color: var(--primary); }

/* ── Section Cards (for multi-section forms) ── */
.section-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
  padding: 24px;
  margin-bottom: 20px;
}

.section-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--gradient-soft);
}

.section-card-title i { color: var(--primary); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  min-height: 44px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover:not(:disabled) {
  opacity: 0.92;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(37,99,235,0.38);
  color: #fff;
}

.btn-secondary {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--gradient-soft);
  border-color: var(--primary);
  color: var(--primary);
}

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

.btn-success:hover:not(:disabled) {
  background: #059669;
  transform: translateY(-1px);
  color: #fff;
}

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

.btn-danger:hover:not(:disabled) {
  background: #dc2626;
  transform: translateY(-1px);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover:not(:disabled) {
  background: var(--primary);
  color: #fff;
}

.btn-sm { padding: 7px 14px; font-size: 0.82rem; min-height: 36px; }
.btn-lg { padding: 14px 28px; font-size: 1rem; min-height: 52px; }
.btn-full { width: 100%; }

/* ── Forms ── */
.form-group { margin-bottom: 20px; }

.form-label {
  display: block;
  margin-bottom: 7px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-label i { color: var(--primary); margin-right: 5px; }

.form-control {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.93rem;
  color: var(--text-primary);
  background: var(--bg-input);
  transition: var(--transition);
  min-height: 44px;
}

.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}

.form-control::placeholder { color: var(--text-muted); }

textarea.form-control { resize: vertical; min-height: 90px; }

select.form-control { cursor: pointer; }

.form-hint {
  margin-top: 5px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.form-error {
  margin-top: 5px;
  font-size: 0.82rem;
  color: var(--danger);
  display: flex;
  align-items: center;
  gap: 4px;
}

.errorlist {
  list-style: none;
  margin: 5px 0 0;
  padding: 0;
}

.errorlist li {
  font-size: 0.82rem;
  color: var(--danger);
  display: flex;
  align-items: center;
  gap: 4px;
}

.errorlist li::before { content: '⚠ '; }

/* Input with icon */
.input-icon-wrap { position: relative; }
.input-icon-wrap .form-control { padding-left: 42px; }
.input-icon-wrap .input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.95rem;
  pointer-events: none;
}

/* Checkbox & Radio */
.check-group {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
  background: var(--bg-input);
}

.check-item:hover { border-color: var(--primary); background: var(--gradient-soft); }

.check-item input[type="checkbox"],
.check-item input[type="radio"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
  cursor: pointer;
  flex-shrink: 0;
}

/* ── Alerts / Messages ── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 16px;
  border: 1px solid transparent;
}

.alert i { flex-shrink: 0; margin-top: 1px; }

.alert-success {
  background: var(--success-bg);
  border-color: var(--success-border);
  color: #065f46;
}

.alert-error, .alert-danger {
  background: var(--danger-bg);
  border-color: var(--danger-border);
  color: #991b1b;
}

.alert-warning {
  background: var(--warning-bg);
  border-color: var(--warning-border);
  color: #92400e;
}

.alert-info {
  background: var(--info-bg);
  border-color: var(--info-border);
  color: #1e40af;
}

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  white-space: nowrap;
}

.badge-success { background: #dcfce7; color: #166534; }
.badge-danger  { background: #fee2e2; color: #991b1b; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-info    { background: #dbeafe; color: #1e40af; }
.badge-primary { background: #ede9fe; color: #5b21b6; }
.badge-muted   { background: #f3f4f6; color: #374151; }

.badge-verified {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
  box-shadow: 0 2px 8px rgba(16,185,129,0.3);
}

/* ── Page Hero Banner ── */
.page-hero {
  background: var(--gradient);
  border-radius: var(--radius-md);
  padding: 28px 32px;
  margin-bottom: 28px;
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.page-hero h1, .page-hero h2 {
  font-size: 1.7rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.page-hero p { opacity: 0.9; font-size: 0.95rem; margin: 0; }

/* ── Stats Grid ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow-xs);
  transition: var(--transition);
}

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

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--gradient-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  font-size: 1.3rem;
  color: var(--primary);
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ── Dashboard Action Cards ── */
.action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.action-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  box-shadow: var(--shadow-xs);
  transition: var(--transition);
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.action-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
  color: var(--text-primary);
}

.action-card-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.action-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
}

.action-card p {
  font-size: 0.83rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.4;
}

/* ── Section Heading ── */
.section-heading {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-heading i { color: var(--primary); }

/* ── Progress Steps ── */
.progress-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin-bottom: 32px;
  overflow-x: auto;
  padding: 4px 0;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.step-circle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  transition: var(--transition);
}

.step.active .step-circle {
  background: var(--gradient);
  color: #fff;
  box-shadow: var(--shadow-primary);
}

.step.done .step-circle {
  background: var(--success);
  color: #fff;
}

.step-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
  white-space: nowrap;
}

.step.active .step-label { color: var(--primary); }
.step.done .step-label { color: var(--success); }

.step-line {
  width: 48px;
  height: 2px;
  background: var(--border);
  margin-bottom: 22px;
  flex-shrink: 0;
}

.step-line.done { background: var(--success); }

/* ── Avatar ── */
.avatar-circle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  flex-shrink: 0;
}

/* ── Divider ── */
.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 20px 0;
}

.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Utility ── */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--text-secondary); }
.text-small  { font-size: 0.82rem; }
.fw-bold     { font-weight: 700; }
.fw-semibold { font-weight: 600; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.w-100 { width: 100%; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .navbar-links { display: none; }
  .hamburger { display: flex; }

  .page-wrapper,
  .page-wrapper-sm,
  .page-wrapper-md {
    padding: 20px 16px 48px;
  }

  .card { padding: 20px; }
  .card-lg { padding: 24px; }

  .page-hero { padding: 20px; }
  .page-hero h1, .page-hero h2 { font-size: 1.35rem; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .action-grid { grid-template-columns: repeat(2, 1fr); }

  .check-group { grid-template-columns: repeat(2, 1fr); }

  .step-line { width: 28px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .action-grid { grid-template-columns: 1fr 1fr; }
  .check-group { grid-template-columns: 1fr 1fr; }
  .btn-lg { padding: 12px 20px; font-size: 0.95rem; }
}


/* ── Pagination ── */
.pagination-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 24px 0 8px;
  flex-wrap: wrap;
}
.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  background: white;
  color: #374151;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s;
}
.page-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }
.page-btn.active { background: var(--gradient); color: white; border-color: transparent; }
.page-btn.disabled { opacity: 0.4; pointer-events: none; }
.page-info { margin-left: auto; font-size: 0.8rem; color: #6b7280; }

/* ── Site Footer ── */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-card);
  margin-top: 48px;
}
.site-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.site-footer-brand {
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-footer-brand i { color: var(--primary); }
.site-footer-logo { width: 22px; height: 22px; flex-shrink: 0; }
.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.site-footer-links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
}
.site-footer-links a:hover { color: var(--primary); }
.site-footer-copy {
  color: var(--text-muted);
  font-size: 0.8rem;
}
@media (max-width: 640px) {
  .site-footer-inner { justify-content: center; text-align: center; }
}