/* ═══════════════════════════════════════════
   INDEX.CSS — Homepage Specific Styles
   CyberEduc
═══════════════════════════════════════════ */

/* ══════════════════════════
   HERO
══════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 64px;
  padding: 120px 80px 80px;
  position: relative;
  overflow: hidden;
  max-width: var(--container);
  margin: 0 auto;
}

/* Grid background */
.hero-bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(0, 255, 136, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 136, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

/* Radial glow behind hero */
.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 255, 136, 0.07) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  flex: 1;
  max-width: 580px;
  position: relative;
  z-index: 1;
}

/* Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--green);
  background: var(--green-glow-s);
  border: 1px solid rgba(0, 255, 136, 0.2);
  border-radius: 100px;
  padding: 6px 14px;
  margin-bottom: 28px;
  letter-spacing: 0.05em;
}

.badge-dot {
  width: 7px;
  height: 7px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.8); }
}

/* Title */
.hero-title {
  font-size: clamp(40px, 5.5vw, 72px);
  color: var(--text);
  margin-bottom: 24px;
  letter-spacing: -0.03em;
  line-height: 1.08;
}

.hero-highlight {
  color: var(--green);
  position: relative;
  display: inline-block;
}

.hero-highlight::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--green);
  opacity: 0.4;
  border-radius: 2px;
}

/* Subtitle */
.hero-sub {
  font-size: 17px;
  color: var(--text-muted);
  margin-bottom: 40px;
  line-height: 1.7;
  max-width: 480px;
}

/* CTA buttons */
.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

/* Stats */
.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-number {
  font-family: var(--font-mono);
  font-size: 26px;
  color: var(--green);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border-light);
}

/* ── Hero Visual (animation placeholder) ── */
.hero-visual {
  flex: 1;
  max-width: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.email-placeholder {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow:
    0 0 0 1px var(--border),
    0 32px 64px rgba(0, 0, 0, 0.5),
    0 0 80px var(--green-glow-s);
}

.email-placeholder-inner {
  padding: 0;
}

.ep-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: var(--bg-3);
  border-bottom: 1px solid var(--border);
}

.ep-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.ep-dot.red    { background: #ff5f57; }
.ep-dot.yellow { background: #febc2e; }
.ep-dot.green  { background: #28c840; }

.ep-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  margin-left: 6px;
}

.ep-body {
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.ep-line {
  height: 12px;
  background: var(--border-light);
  border-radius: 6px;
  opacity: 0.5;
}
.ep-line--short  { width: 45%; }
.ep-line--medium { width: 70%; }
.ep-line--long   { width: 90%; }

.pulse-1 { animation: line-pulse 3s ease-in-out infinite 0s; }
.pulse-2 { animation: line-pulse 3s ease-in-out infinite 0.4s; }
.pulse-3 { animation: line-pulse 3s ease-in-out infinite 0.8s; }

@keyframes line-pulse {
  0%, 100% { opacity: 0.2; }
  50%       { opacity: 0.6; }
}

.ep-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--red);
  background: rgba(255, 68, 85, 0.1);
  border: 1px solid rgba(255, 68, 85, 0.25);
  border-radius: var(--radius);
  padding: 8px 14px;
  margin-top: 8px;
  animation: tag-appear 2s ease-in-out infinite alternate;
}

@keyframes tag-appear {
  0%   { opacity: 0.4; transform: translateY(2px); }
  100% { opacity: 1;   transform: translateY(0); }
}

/* ══════════════════════════
   FEATURES
══════════════════════════ */
.features {
  padding: var(--section-pad) 80px;
  max-width: var(--container);
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: var(--transition-s);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, var(--green-glow-s) 0%, transparent 60%);
  opacity: 0;
  transition: var(--transition-s);
}

.feature-card:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card--accent {
  border-color: rgba(0, 255, 136, 0.2);
  background: linear-gradient(135deg, var(--bg-2) 0%, rgba(0, 255, 136, 0.04) 100%);
}

.feature-card--accent:hover {
  border-color: rgba(0, 255, 136, 0.4);
  box-shadow: 0 16px 40px var(--green-glow);
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 20px;
  display: block;
}

.feature-title {
  font-size: 22px;
  color: var(--text);
  margin-bottom: 12px;
  font-weight: 700;
}

.feature-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.feature-link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--green);
  transition: var(--transition);
  letter-spacing: 0.02em;
}

.feature-link:hover {
  letter-spacing: 0.05em;
}

/* ══════════════════════════
   LESSONS PREVIEW
══════════════════════════ */
.lessons-preview {
  padding: var(--section-pad) 80px;
  max-width: var(--container);
  margin: 0 auto;
  position: relative;
}

.lessons-preview::before {
  content: '';
  position: absolute;
  top: 0;
  left: 80px;
  right: 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-light), transparent);
}

.lessons-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.lesson-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition-s);
}

.lesson-card:hover {
  border-color: var(--border-light);
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}

.lesson-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.lesson-level {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 100px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.level-beginner {
  color: var(--green);
  background: var(--green-glow-s);
  border: 1px solid rgba(0, 255, 136, 0.2);
}

.level-intermediate {
  color: var(--yellow);
  background: rgba(255, 215, 0, 0.08);
  border: 1px solid rgba(255, 215, 0, 0.2);
}

.level-advanced {
  color: var(--red);
  background: rgba(255, 68, 85, 0.08);
  border: 1px solid rgba(255, 68, 85, 0.2);
}

.lesson-duration {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

.lesson-title {
  font-size: 18px;
  color: var(--text);
  margin-bottom: 10px;
  font-weight: 700;
}

.lesson-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 24px;
}

.lessons-cta {
  text-align: center;
}

/* ══════════════════════════
   INCIDENT SECTION
══════════════════════════ */
.incident-section {
  padding: var(--section-pad) 80px;
  position: relative;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.incident-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  gap: 96px;
}

.incident-text {
  flex: 1;
  max-width: 420px;
}

.incident-text .section-label {
  display: inline-block;
  margin-bottom: 16px;
}

.incident-text .section-title {
  margin-bottom: 20px;
}

.incident-desc {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}

.incident-steps {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.step:last-child {
  border-bottom: none;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--green);
  min-width: 28px;
  padding-top: 2px;
  opacity: 0.7;
}

.step-content h4 {
  font-size: 16px;
  color: var(--text);
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.step-content p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ══════════════════════════
   CTA SECTION
══════════════════════════ */
.cta-section {
  padding: var(--section-pad) 80px;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(0, 255, 136, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.cta-inner {
  max-width: var(--container);
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: clamp(36px, 5vw, 60px);
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.cta-sub {
  font-size: 17px;
  color: var(--text-muted);
  margin-bottom: 40px;
}

.cta-github {
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-muted);
}

.github-link {
  color: var(--text);
  font-weight: 600;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 1px;
  transition: var(--transition);
}

.github-link:hover {
  color: var(--green);
  border-color: var(--green);
}

/* ══════════════════════════
   FOOTER
══════════════════════════ */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-2);
  padding: 64px 80px 32px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 64px;
  margin-bottom: 48px;
}

.footer-brand .logo-icon {
  font-size: 22px;
}

.footer-brand .logo-text {
  font-size: 18px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 64px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col h4 {
  font-size: 13px;
  color: var(--text);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.footer-col a {
  font-size: 14px;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--green);
}

.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  text-align: center;
}

/* ══════════════════════════
   RESPONSIVE
══════════════════════════ */
@media (max-width: 1024px) {
  .hero {
    flex-direction: column;
    padding: 100px 40px 60px;
    text-align: center;
  }

  .hero-content { max-width: 100%; }
  .hero-cta { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-sub { margin: 0 auto 40px; }
  .hero-visual { max-width: 100%; width: 100%; }

  .features        { padding: 80px 40px; }
  .lessons-preview { padding: 80px 40px; }
  .incident-section{ padding: 80px 40px; }
  .cta-section     { padding: 80px 40px; }
  .footer          { padding: 48px 40px 24px; }

  .incident-inner  { flex-direction: column; gap: 48px; }
  .incident-text   { max-width: 100%; }
  .lessons-grid    { grid-template-columns: 1fr; }
  .footer-inner    { flex-direction: column; gap: 40px; }
}

@media (max-width: 768px) {
  .features-grid   { grid-template-columns: 1fr; }
  .footer-links    { flex-direction: column; gap: 32px; }

  .hero            { padding: 100px 24px 60px; }
  .features        { padding: 64px 24px; }
  .lessons-preview { padding: 64px 24px; }
  .incident-section{ padding: 64px 24px; }
  .cta-section     { padding: 64px 24px; }
  .footer          { padding: 40px 24px 24px; }
}