/* SMIA Intelligence — Hugo Frontpage */

:root {
  --bg: #07070d;
  --bg-2: #0c0c14;
  --bg-card: #10101a;
  --bg-card-hover: #16161f;
  --border: #1c1c28;
  --border-strong: #2a2a38;
  --text: #e5e5e5;
  --text-dim: #888;
  --text-mute: #555;
  --accent: #00f0ff;
  --accent-2: #a855f7;
  --green: #22c55e;
  --orange: #f97316;
  --yellow: #eab308;
  --pink: #ec4899;
  --red: #ef4444;
  --blue: #3b82f6;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
}

body {
  background-image:
    linear-gradient(rgba(0, 240, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.025) 1px, transparent 1px);
  background-size: 50px 50px;
  background-attachment: fixed;
  min-height: 100vh;
}

/* === Top navigation === */
.topnav {
  background: rgba(7, 7, 13, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-mark {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  font-family: 'Orbitron', sans-serif;
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
}

.brand-text {
  font-family: 'Orbitron', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.18em;
  color: var(--text);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  flex: 1;
  justify-content: center;
}

.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.5rem 0;
  position: relative;
  transition: color 0.2s;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--accent);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.add-channel-btn {
  background: var(--accent);
  color: #000;
  border: none;
  padding: 0.6rem 1.1rem;
  border-radius: 6px;
  font-family: 'Orbitron', sans-serif;
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
}

.add-channel-btn:hover {
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
  transform: translateY(-1px);
}

/* === Content === */
.content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 2rem 4rem;
}

/* === Hero === */
.hero {
  position: relative;
  padding: 4rem 0 3rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 800px 400px at 20% 30%, rgba(0, 240, 255, 0.08), transparent),
    radial-gradient(ellipse 600px 300px at 80% 70%, rgba(168, 85, 247, 0.08), transparent);
  z-index: -1;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #4ade80;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero-eyebrow .dot {
  width: 6px;
  height: 6px;
  background: #4ade80;
  border-radius: 50%;
  box-shadow: 0 0 8px #4ade80;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 700;
  margin: 0 0 1.5rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.grad {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 40px rgba(0, 240, 255, 0.3);
}

.subtitle {
  color: var(--text-dim);
  font-size: 1.1rem;
  max-width: 800px;
  margin: 0;
  line-height: 1.7;
}

/* === KPI cards === */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 2.5rem 0;
}

.kpi-card {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-2) 100%);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
}

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

.kpi-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.4;
}

.kpi-icon {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.kpi-cyan   { background: rgba(0, 240, 255, 0.1); color: var(--accent); }
.kpi-purple { background: rgba(168, 85, 247, 0.1); color: var(--accent-2); }
.kpi-green  { background: rgba(34, 197, 94, 0.1); color: var(--green); }
.kpi-orange { background: rgba(249, 115, 22, 0.1); color: var(--orange); }
.kpi-pink   { background: rgba(236, 72, 153, 0.1); color: var(--pink); }

.kpi-value {
  font-family: 'Orbitron', sans-serif;
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
  margin-bottom: 0.5rem;
  font-variant-numeric: tabular-nums;
}

.kpi-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  font-weight: 600;
}

.kpi-spark {
  margin-top: 1rem;
  height: 32px;
}

/* === Charts === */
.charts-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1rem;
  margin: 2rem 0;
}

@media (max-width: 900px) {
  .charts-row { grid-template-columns: 1fr; }
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: all 0.3s;
}

.chart-card:hover {
  border-color: var(--border-strong);
}

.chart-header {
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.chart-header h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.95rem;
  margin: 0 0 0.25rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text);
}

.muted {
  color: var(--text-dim);
  font-size: 0.8rem;
}

#chart-growth, #chart-distribution, #chart-popularity, #chart-terms {
  min-height: 280px;
}

.chart-large #chart-growth { min-height: 320px; }

/* === Data sections === */
.data-section {
  margin: 2.5rem 0;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.section-header h2 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.15rem;
  margin: 0;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text);
}

/* === Videos === */
.video-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 0.75rem;
}

.video-list li {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  transition: all 0.2s;
  position: relative;
}

.video-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75rem;
  bottom: 0.75rem;
  width: 2px;
  background: var(--accent);
  border-radius: 2px;
  opacity: 0;
  transition: opacity 0.2s;
}

.video-list li:hover {
  border-color: var(--border-strong);
  transform: translateX(2px);
}

.video-list li:hover::before {
  opacity: 1;
}

.video-list a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  line-height: 1.4;
}

.video-list a:hover { color: var(--accent); }

.meta {
  font-size: 0.75rem;
  color: var(--text-mute);
  font-family: 'JetBrains Mono', monospace;
  display: block;
  margin-bottom: 0.5rem;
}

.subcat-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.7rem;
  background: rgba(0, 240, 255, 0.08);
  color: var(--accent);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  border: 1px solid rgba(0, 240, 255, 0.2);
}

/* === Footer === */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-mute);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  font-family: 'JetBrains Mono', monospace;
}

/* === Modal === */
.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  color: var(--text);
}

.modal-header {
  border-bottom: 1px solid var(--border);
}

.modal-footer {
  border-top: 1px solid var(--border);
}

.btn-close {
  background: none;
  color: var(--text);
  font-size: 1.4rem;
  opacity: 0.7;
}

.btn-close:hover { opacity: 1; }

.form-group { margin-bottom: 1rem; }

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.4rem;
  color: var(--text-dim);
}

.form-control {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 0.6rem 0.8rem;
  font-family: 'Inter', sans-serif;
  width: 100%;
}

.form-control:focus {
  background: var(--bg);
  border-color: var(--accent);
  color: var(--text);
  outline: none;
  box-shadow: 0 0 0 2px rgba(0, 240, 255, 0.15);
}

.form-hint {
  display: block;
  margin-top: 0.3rem;
  color: var(--text-mute);
  font-size: 0.75rem;
}

.form-check-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-check-row label {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin: 0;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
}

.btn {
  border: none;
  border-radius: 6px;
  padding: 0.55rem 1.1rem;
  font-family: 'Orbitron', sans-serif;
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

.btn-primary:hover {
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.feedback {
  margin-top: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
}

.feedback.alert-info {
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.3);
  color: var(--accent);
}

.feedback.alert-success {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #4ade80;
}

.feedback.alert-danger {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.d-none { display: none !important; }

/* === User badge === */
.user-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(168, 85, 247, 0.1);
  border: 1px solid rgba(168, 85, 247, 0.3);
  color: var(--accent-2);
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: lowercase;
}

.user-badge::before {
  content: "●";
  color: #4ade80;
  font-size: 0.7rem;
}

/* === Breadcrumb === */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
  font-family: 'JetBrains Mono', monospace;
}

.breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb a:hover { color: var(--accent); }

.breadcrumb .current {
  color: var(--text);
  font-weight: 600;
}

.breadcrumb .sep {
  color: var(--text-mute);
}

/* === Page header === */
.page-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.page-header h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin: 0 0 1rem;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-description {
  color: var(--text-dim);
  font-size: 1.1rem;
  margin: 0 0 1.5rem;
  max-width: 800px;
  line-height: 1.6;
}

.page-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.meta-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
}

.meta-chip .chip-label {
  color: var(--text-dim);
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

.meta-chip .chip-value {
  color: var(--accent);
  font-weight: 600;
}

.meta-chip.small {
  padding: 0.2rem 0.5rem;
  font-size: 0.7rem;
  white-space: nowrap;
}

.key-terms {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

/* === Page body === */
.page-body {
  line-height: 1.8;
  font-size: 1rem;
  color: var(--text);
}

.page-body h2 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.2rem;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.page-body h3 {
  color: var(--accent-2);
  font-size: 1.05rem;
  margin: 1.5rem 0 0.75rem;
  font-weight: 600;
}

.page-body p { margin: 0 0 1.25rem; color: var(--text); }
.page-body ul { margin: 0 0 1.5rem; padding-left: 1.5rem; }
.page-body li { margin-bottom: 0.5rem; color: var(--text); }
.page-body strong { color: var(--accent); font-weight: 600; }
.page-body code {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
  font-size: 0.9em;
}

.back-link {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.back-link a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-dim);
  text-decoration: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all 0.2s;
}

.back-link a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* === Card grid === */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.content-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}

.content-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.2s;
}

.content-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: 0 4px 30px rgba(0, 240, 255, 0.08);
}

.content-card:hover::before {
  transform: scaleY(1);
}

.content-card h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.95rem;
  margin: 0 0 0.5rem;
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.content-card:hover h3 {
  color: var(--accent);
}

.card-description {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin: 0 0 1rem;
  line-height: 1.5;
  min-height: 2.5em;
}

.card-meta {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.card-terms {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
}

.card-arrow {
  position: absolute;
  bottom: 1rem;
  right: 1.25rem;
  color: var(--text-mute);
  font-size: 1.1rem;
  transition: all 0.2s;
}

.content-card:hover .card-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

/* === Login page === */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 3rem;
  max-width: 420px;
  width: 100%;
  position: relative;
  overflow: hidden;
}

.login-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), transparent);
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 12px;
  color: #000;
  font-family: 'Orbitron', sans-serif;
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
}

.login-header h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.4rem;
  margin: 0 0 0.5rem;
  letter-spacing: 0.1em;
}

.login-header p {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin: 0;
}

.login-form .form-group { margin-bottom: 1.25rem; }

.login-form .btn-primary {
  width: 100%;
  padding: 0.75rem;
  font-size: 0.85rem;
}

.login-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  display: none;
}

.login-hint {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-mute);
  font-family: 'JetBrains Mono', monospace;
}

/* === User badge === */
.user-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(168, 85, 247, 0.1);
  border: 1px solid rgba(168, 85, 247, 0.3);
  color: var(--accent-2);
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: lowercase;
}

.user-badge::before {
  content: "●";
  color: #4ade80;
  font-size: 0.7rem;
}

/* === Breadcrumb === */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
  font-family: 'JetBrains Mono', monospace;
}

.breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb a:hover { color: var(--accent); }

.breadcrumb .current {
  color: var(--text);
  font-weight: 600;
}

.breadcrumb .sep {
  color: var(--text-mute);
}

/* === Page header === */
.page-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.page-header h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin: 0 0 1rem;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-description {
  color: var(--text-dim);
  font-size: 1.1rem;
  margin: 0 0 1.5rem;
  max-width: 800px;
  line-height: 1.6;
}

.page-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.meta-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
}

.meta-chip .chip-label {
  color: var(--text-dim);
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

.meta-chip .chip-value {
  color: var(--accent);
  font-weight: 600;
}

.meta-chip.small {
  padding: 0.2rem 0.5rem;
  font-size: 0.7rem;
  white-space: nowrap;
}

.key-terms {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

/* === Page body === */
.page-body {
  line-height: 1.8;
  font-size: 1rem;
  color: var(--text);
}

.page-body h2 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.2rem;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.page-body h3 {
  color: var(--accent-2);
  font-size: 1.05rem;
  margin: 1.5rem 0 0.75rem;
  font-weight: 600;
}

.page-body p { margin: 0 0 1.25rem; color: var(--text); }
.page-body ul { margin: 0 0 1.5rem; padding-left: 1.5rem; }
.page-body li { margin-bottom: 0.5rem; color: var(--text); }
.page-body strong { color: var(--accent); font-weight: 600; }
.page-body code {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--accent);
  font-size: 0.9em;
}

.back-link {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.back-link a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-dim);
  text-decoration: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all 0.2s;
}

.back-link a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* === Card grid === */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.content-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
  position: relative;
  overflow: hidden;
}

.content-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.2s;
}

.content-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: 0 4px 30px rgba(0, 240, 255, 0.08);
}

.content-card:hover::before {
  transform: scaleY(1);
}

.content-card h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.95rem;
  margin: 0 0 0.5rem;
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.content-card:hover h3 {
  color: var(--accent);
}

.card-description {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin: 0 0 1rem;
  line-height: 1.5;
  min-height: 2.5em;
}

.card-meta {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.card-terms {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
}

.card-arrow {
  position: absolute;
  bottom: 1rem;
  right: 1.25rem;
  color: var(--text-mute);
  font-size: 1.1rem;
  transition: all 0.2s;
}

.content-card:hover .card-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

/* === Login page === */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 3rem;
  max-width: 420px;
  width: 100%;
  position: relative;
  overflow: hidden;
}

.login-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), transparent);
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 12px;
  color: #000;
  font-family: 'Orbitron', sans-serif;
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
}

.login-header h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.4rem;
  margin: 0 0 0.5rem;
  letter-spacing: 0.1em;
}

.login-header p {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin: 0;
}

.login-form .form-group { margin-bottom: 1.25rem; }

.login-form .btn-primary {
  width: 100%;
  padding: 0.75rem;
  font-size: 0.85rem;
}

.login-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  display: none;
}

.login-hint {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-mute);
  font-family: 'JetBrains Mono', monospace;
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* === Responsive === */
@media (max-width: 768px) {
  .nav-inner { flex-direction: column; gap: 1rem; padding: 1rem; }
  .nav-links { width: 100%; justify-content: center; flex-wrap: wrap; }
  .hero h1 { font-size: 2.2rem; }
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
  .video-list { grid-template-columns: 1fr; }
}