:root {
  --navy: #0b0f1a;
  --navy-2: #111827;
  --navy-3: #1a2236;
  --navy-4: #243049;
  --amber: #f59e0b;
  --amber-light: #fbbf24;
  --amber-dim: rgba(245, 158, 11, 0.12);
  --white: #f8fafc;
  --muted: #8b9ab0;
  --border: rgba(255, 255, 255, 0.07);
  --success: #10b981;
  --danger: #ef4444;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--navy);
  color: var(--white);
  min-height: 100vh;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5 {
  font-family: 'Syne', sans-serif;
}

/* ── UTILS ── */
.hidden {
  display: none !important;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  border: none;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--amber);
  color: var(--navy);
  padding: 11px 24px;
}

.btn-primary:hover {
  background: var(--amber-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  padding: 11px 20px;
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--amber);
  color: var(--amber);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
  padding: 8px 16px;
}

.btn-sm {
  padding: 7px 14px;
  font-size: 0.78rem;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px;
  background: rgba(11, 15, 26, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.nav-logo span {
  color: var(--amber);
}

.nav-logo-dot {
  width: 8px;
  height: 8px;
  background: var(--amber);
  border-radius: 50%;
  display: inline-block;
}

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

.nav-user {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--muted);
}

.nav-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--amber-dim);
  border: 1.5px solid var(--amber);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Syne', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--amber);
}

.badge-admin {
  background: var(--amber-dim);
  color: var(--amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  letter-spacing: 0.05em;
}

/* ── PAGES ── */
.page {
  display: none;
  padding-top: 80px;
  min-height: 100vh;
  animation: fadeIn 0.35s ease;
}

.page.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── HOME ── */
.hero {
  position: relative;
  overflow: hidden;
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 40%, rgba(245, 158, 11, 0.08) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 20% 70%, rgba(99, 102, 241, 0.06) 0%, transparent 60%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 48px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--amber-dim);
  border: 1px solid rgba(245, 158, 11, 0.25);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--amber);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 28px;
}

.hero-title {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 24px;
  max-width: 700px;
}

.hero-title em {
  color: var(--amber);
  font-style: normal;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 500px;
  margin-bottom: 40px;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 72px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.stat-val {
  font-family: 'Syne', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--amber);
}

.stat-label {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 2px;
}

/* ── COURSES GALLERY ── */
.gallery-header {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 48px 0;
}

.gallery-header h2 {
  font-size: 2rem;
  font-weight: 800;
}

.gallery-header p {
  color: var(--muted);
  margin-top: 8px;
}

.tab-bar {
  display: flex;
  gap: 4px;
  margin-top: 28px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}

.tab {
  padding: 10px 20px;
  font-family: 'Syne', sans-serif;
  font-size: 0.83rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--muted);
  border: none;
  background: transparent;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all 0.2s;
}

.tab.active {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.tab:hover:not(.active) {
  color: var(--white);
}

.courses-grid {
  max-width: 1100px;
  margin: 0 auto;
  padding: 36px 48px 80px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.course-card {
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
}

.course-card:hover {
  border-color: rgba(245, 158, 11, 0.35);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.course-thumb {
  height: 160px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.course-thumb-icon {
  font-size: 2.8rem;
  position: relative;
  z-index: 1;
}

.course-body {
  padding: 20px;
}

.course-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
  font-family: 'Syne', sans-serif;
}

.course-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}

.course-desc {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.course-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--muted);
}

.course-progress-bar {
  height: 3px;
  background: var(--navy-4);
  border-radius: 2px;
  margin-top: 12px;
}

.course-progress-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--amber);
  transition: width 0.5s ease;
}

.locked-overlay {
  position: absolute;
  inset: 0;
  background: rgba(11, 15, 26, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  font-size: 1.5rem;
  backdrop-filter: blur(2px);
}

/* ── COURSE CONTENT ── */
.content-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 48px 80px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 32px;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.85rem;
  cursor: pointer;
  margin-bottom: 24px;
  transition: color 0.2s;
  background: none;
  border: none;
  font-family: 'DM Sans', sans-serif;
}

.back-btn:hover {
  color: var(--amber);
}

.video-wrap {
  background: #000;
  border-radius: 14px;
  overflow: hidden;
  aspect-ratio: 16/9;
  position: relative;
}

.video-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: linear-gradient(135deg, #0d1321, #1a2236);
  color: var(--muted);
}

.play-btn-big {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--amber);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  font-size: 1.4rem;
  color: var(--navy);
}

.play-btn-big:hover {
  transform: scale(1.08);
  box-shadow: 0 0 30px rgba(245, 158, 11, 0.4);
}

.content-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 20px 0 8px;
}

.content-meta {
  display: flex;
  gap: 20px;
  color: var(--muted);
  font-size: 0.83rem;
  margin-bottom: 20px;
}

.content-desc {
  color: var(--muted);
  line-height: 1.8;
  font-size: 0.92rem;
  margin-bottom: 28px;
}

.modules-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.module-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  cursor: pointer;
  transition: all 0.2s;
}

.module-item:hover {
  border-color: rgba(245, 158, 11, 0.3);
}

.module-item.active {
  border-color: var(--amber);
  background: var(--amber-dim);
}

.module-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--navy-4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  font-family: 'Syne', sans-serif;
  flex-shrink: 0;
  color: var(--muted);
}

.module-item.active .module-num {
  background: var(--amber);
  color: var(--navy);
}

.module-item.done .module-num {
  background: var(--success);
  color: #fff;
}

.module-info {
  flex: 1;
}

.module-name {
  font-size: 0.85rem;
  font-weight: 500;
}

.module-dur {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 2px;
}

.sidebar-card {
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
}

.sidebar-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.progress-circle-wrap {
  display: flex;
  justify-content: center;
  margin: 16px 0;
}

/* ── ADMIN ── */
.admin-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 48px 80px;
}

.admin-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.admin-tab {
  padding: 10px 24px;
  font-family: 'Syne', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  background: transparent;
  border: none;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all 0.2s;
}

.admin-tab.active {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.admin-tab:hover:not(.active) {
  color: var(--white);
}

.admin-section {
  display: none;
  animation: fadeIn 0.3s ease;
}

.admin-section.active {
  display: block;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-head h3 {
  font-size: 1.3rem;
  font-weight: 800;
}

.table-wrap {
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
}

thead th {
  text-align: left;
  padding: 14px 20px;
  font-family: 'Syne', sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}

tbody tr:last-child {
  border-bottom: none;
}

tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

td {
  padding: 14px 20px;
  font-size: 0.88rem;
  vertical-align: middle;
}

.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 500;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.dot-green {
  background: var(--success);
}

.dot-gray {
  background: var(--muted);
}

.access-pills {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.pill {
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
  font-family: 'Syne', sans-serif;
  letter-spacing: 0.04em;
}

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

/* ── CREATE USER FORM ── */
.form-card {
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  max-width: 560px;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full {
  grid-column: 1 / -1;
}

label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-family: 'Syne', sans-serif;
}

input,
select {
  background: var(--navy-3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 14px;
  color: var(--white);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

input:focus,
select:focus {
  border-color: var(--amber);
}

select option {
  background: var(--navy-3);
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 4px;
}

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

.checkbox-item input[type=checkbox] {
  width: 16px;
  height: 16px;
  accent-color: var(--amber);
  padding: 0;
  border-radius: 4px;
}

.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

/* ── MODAL ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(5, 8, 15, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

.modal {
  background: var(--navy-2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px;
  width: 100%;
  max-width: 420px;
  position: relative;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--navy-3);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--muted);
  font-size: 1rem;
  transition: all 0.2s;
}

.modal-close:hover {
  color: var(--white);
  border-color: var(--muted);
}

.modal-logo {
  font-family: 'Syne', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.modal-logo span {
  color: var(--amber);
}

.modal-sub {
  color: var(--muted);
  font-size: 0.88rem;
  margin-bottom: 28px;
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.modal-form input {
  width: 100%;
}

.role-toggle {
  display: flex;
  gap: 8px;
  background: var(--navy-3);
  border-radius: 8px;
  padding: 4px;
}

.role-btn {
  flex: 1;
  padding: 8px;
  text-align: center;
  cursor: pointer;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: 'Syne', sans-serif;
  transition: all 0.2s;
  color: var(--muted);
  border: none;
  background: transparent;
}

.role-btn.active {
  background: var(--amber);
  color: var(--navy);
}

.login-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.83rem;
  color: #fca5a5;
  display: none;
}

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

.demo-hint {
  background: var(--amber-dim);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.78rem;
  color: var(--amber);
  margin-bottom: 4px;
  line-height: 1.5;
}

/* ── TOAST ── */
.toast {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
  background: var(--navy-3);
  border: 1px solid var(--success);
  border-radius: 12px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--white);
  animation: toastIn 0.3s ease;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

@keyframes toastIn {
  from {
    transform: translateY(20px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  nav {
    padding: 16px 20px;
  }

  .hero-content {
    padding: 0 20px;
  }

  .hero-stats {
    gap: 24px;
    flex-wrap: wrap;
  }

  .courses-grid {
    padding: 24px 20px;
    grid-template-columns: 1fr;
  }

  .gallery-header {
    padding: 32px 20px 0;
  }

  .content-wrap {
    grid-template-columns: 1fr;
    padding: 24px 20px;
  }

  .admin-wrap {
    padding: 24px 20px;
  }

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

  .modal {
    margin: 16px;
    padding: 28px 24px;
  }

  .table-wrap {
    overflow: scroll;
  }

  nav {
    position: unset;
  }

  nav,
  .nav-right {
    flex-wrap: wrap;
    gap: 1rem;
  }
}