/* ── Google Fonts ─────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;600;700;900&family=Rajdhani:wght@400;500;600;700&display=swap');

/* ── Design Tokens ────────────────────────────────── */
:root {
  --bg:           #07090f;
  --panel:        #0c1018;
  --panel2:       #090d14;
  --text:         #e2ecf7;
  --muted:        #5a7080;
  --neon-green:   #00ff88;
  --neon-purple:  #b44fff;
  --neon-red:     #ff2244;
  --neon-orange:  #ff8c00;
  --border:       rgba(0,255,136,0.13);
  --glow-green:   0 0 8px rgba(0,255,136,0.45), 0 0 24px rgba(0,255,136,0.18);
  --glow-purple:  0 0 8px rgba(180,79,255,0.45), 0 0 24px rgba(180,79,255,0.18);
  --glow-red:     0 0 8px rgba(255,34,68,0.45),  0 0 24px rgba(255,34,68,0.18);
  --shadow:       rgba(0,0,0,0.45);
  --max:          1140px;
}

/* ── Reset ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: 'Rajdhani', system-ui, sans-serif;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }

/* Scanline texture */
body::before {
  content: '';
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background: repeating-linear-gradient(
    0deg, transparent, transparent 2px,
    rgba(0,255,136,0.012) 2px, rgba(0,255,136,0.012) 4px
  );
}

/* ── Nav ──────────────────────────────────────────── */
.hub-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  background: rgba(7,9,15,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.hub-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Orbitron', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}
.hub-logo-icon { color: var(--neon-green); font-size: 1.3rem; }
.dot { color: var(--neon-green); }
.hub-nav-links { display: flex; align-items: center; gap: 1rem; }
.nav-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 6px;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--text); }
.nav-btn {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 8px;
  background: linear-gradient(135deg, #00cc6a, #00ff88);
  color: #07090f;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}
.nav-btn:hover { opacity: 0.85; }
.nav-user-email {
  font-size: 0.85rem;
  color: var(--neon-green);
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nav-logout {
  font-size: 0.8rem;
  color: var(--muted);
  cursor: pointer;
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 6px;
  background: none;
  transition: color 0.2s, border-color 0.2s;
}
.nav-logout:hover { color: var(--neon-red); border-color: var(--neon-red); }

/* ── Hero ─────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  padding: 100px 2rem 80px;
  text-align: center;
}
.hero-inner { position: relative; z-index: 1; max-width: var(--max); margin: 0 auto; }
.hero-eyebrow {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--neon-green);
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.hero-title {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  color: var(--text);
}
.accent-green  { color: var(--neon-green);  text-shadow: var(--glow-green); }
.accent-purple { color: var(--neon-purple); text-shadow: var(--glow-purple); }
.hero-sub {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 600px;
  margin: 0 auto 2.5rem;
}
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.stat-num {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--neon-green);
  text-shadow: var(--glow-green);
}
.stat-label { font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.btn-primary {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, #00cc6a, #00ff88);
  color: #07090f;
  transition: opacity 0.2s, transform 0.2s;
}
.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-ghost {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--text);
  transition: border-color 0.2s, transform 0.2s;
}
.btn-ghost:hover { border-color: var(--neon-green); transform: translateY(-1px); }
.hero-glow {
  position: absolute;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 800px; height: 600px;
  background: radial-gradient(ellipse at center, rgba(0,255,136,0.07) 0%, transparent 70%);
  pointer-events: none;
}

/* ── Section shared ───────────────────────────────── */
.section-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.75rem;
  color: var(--text);
}
.section-sub {
  text-align: center;
  color: var(--muted);
  margin-bottom: 3rem;
  font-size: 1rem;
}

/* ── Courses ──────────────────────────────────────── */
.courses { padding: 80px 2rem; }
.courses-inner { max-width: var(--max); margin: 0 auto; }
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.course-card {
  background: var(--panel);
  border-radius: 14px;
  border: 1px solid var(--border);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}
.course-card:hover { transform: translateY(-3px); }
.course-card--green:hover { box-shadow: 0 8px 40px rgba(0,255,136,0.12); border-color: rgba(0,255,136,0.35); }
.course-card--red:hover   { box-shadow: 0 8px 40px rgba(255,34,68,0.12); border-color: rgba(255,34,68,0.35); }
.course-card--locked      { opacity: 0.55; }
.course-card-header { display: flex; align-items: center; justify-content: space-between; }
.course-badge {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 3px 10px;
  border-radius: 20px;
}
.course-status {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
}
.course-status--live { background: rgba(0,255,136,0.12); color: var(--neon-green); }
.course-status--soon { background: rgba(180,79,255,0.12); color: var(--neon-purple); }
.course-icon { font-size: 2.5rem; }
.course-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}
.course-desc { font-size: 0.9rem; color: var(--muted); line-height: 1.5; }
.course-features { list-style: none; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.course-features li { font-size: 0.88rem; color: var(--text); }
.course-progress { display: flex; flex-direction: column; gap: 4px; }
.progress-bar-wrap { height: 4px; background: rgba(255,255,255,0.08); border-radius: 4px; overflow: hidden; }
.progress-bar { height: 100%; border-radius: 4px; transition: width 0.5s ease; }
.progress-bar--green { background: var(--neon-green); }
.progress-bar--red   { background: var(--neon-red); }
.progress-label { font-size: 0.78rem; color: var(--muted); }
.course-btn {
  display: block;
  text-align: center;
  padding: 12px;
  border-radius: 8px;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  transition: opacity 0.2s;
  margin-top: auto;
}
.course-btn--green { background: linear-gradient(135deg,#00cc6a,#00ff88); color: #07090f; }
.course-btn--red   { background: linear-gradient(135deg,#cc1133,#ff2244); color: #fff; }
.course-btn--locked { background: rgba(255,255,255,0.06); color: var(--muted); cursor: not-allowed; border: none; }
.course-btn:not(.course-btn--locked):hover { opacity: 0.85; }

/* ── Features ─────────────────────────────────────── */
.features { padding: 80px 2rem; background: var(--panel2); }
.features-inner { max-width: var(--max); margin: 0 auto; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}
.feature-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.2s;
}
.feature-card:hover { border-color: rgba(0,255,136,0.3); }
.feature-icon { font-size: 2rem; }
.feature-card h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
}
.feature-card p { font-size: 0.88rem; color: var(--muted); line-height: 1.55; }

/* ── Footer ───────────────────────────────────────── */
.hub-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 2rem;
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Orbitron', sans-serif;
  font-size: 1rem;
  font-weight: 700;
}
.footer-copy { font-size: 0.82rem; color: var(--muted); }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { font-size: 0.85rem; color: var(--muted); transition: color 0.2s; }
.footer-links a:hover { color: var(--neon-green); }

/* ── Login Page ───────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
}
.login-glow {
  position: fixed;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 600px;
  background: radial-gradient(ellipse, rgba(0,255,136,0.07) 0%, transparent 70%);
  pointer-events: none;
}
.login-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  width: 100%;
  max-width: 440px;
  position: relative;
  z-index: 1;
}
.login-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: 'Orbitron', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}
.login-tagline {
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 2rem;
}
.login-tabs {
  display: flex;
  background: var(--panel2);
  border-radius: 8px;
  padding: 4px;
  margin-bottom: 1.75rem;
}
.login-tab {
  flex: 1;
  text-align: center;
  padding: 8px;
  border-radius: 6px;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  color: var(--muted);
  border: none;
  background: none;
  transition: background 0.2s, color 0.2s;
}
.login-tab.active { background: var(--panel); color: var(--neon-green); }
.login-form { display: flex; flex-direction: column; gap: 1rem; }
.login-form.hidden { display: none; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 0.82rem; font-weight: 600; color: var(--muted); }
.form-input {
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 14px;
  color: var(--text);
  font-family: 'Rajdhani', sans-serif;
  font-size: 1rem;
  font-weight: 500;
  outline: none;
  transition: border-color 0.2s;
}
.form-input:focus { border-color: var(--neon-green); }
.form-input::placeholder { color: var(--muted); }
.code-inputs { display: flex; gap: 8px; }
.code-input {
  flex: 1;
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 6px;
  color: var(--text);
  font-family: 'Orbitron', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  text-align: center;
  outline: none;
  transition: border-color 0.2s;
}
.code-input:focus { border-color: var(--neon-green); }
.form-submit {
  width: 100%;
  padding: 13px;
  border-radius: 8px;
  border: none;
  background: linear-gradient(135deg, #00cc6a, #00ff88);
  color: #07090f;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s;
  margin-top: 0.25rem;
}
.form-submit:hover { opacity: 0.88; }
.form-submit:disabled { opacity: 0.5; cursor: not-allowed; }
.form-link {
  text-align: center;
  font-size: 0.82rem;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s;
  background: none;
  border: none;
}
.form-link:hover { color: var(--neon-green); }
.form-error {
  color: #ff6680;
  font-size: 0.83rem;
  text-align: center;
  min-height: 1.2em;
}
.form-success {
  color: var(--neon-green);
  font-size: 0.83rem;
  text-align: center;
  min-height: 1.2em;
}

/* ── Dashboard Page ───────────────────────────────── */
.dash-page {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3rem 2rem;
}
.dash-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}
.dash-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--neon-green);
  text-shadow: var(--glow-green);
}
.dash-user { font-size: 0.9rem; color: var(--muted); }
.dash-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.dash-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}
.dash-card-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}
.dash-course-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  margin-bottom: 0.75rem;
  transition: border-color 0.2s, background 0.2s;
}
.dash-course-link:hover { background: rgba(255,255,255,0.03); border-color: rgba(0,255,136,0.25); }
.dash-course-name { font-weight: 600; font-size: 0.95rem; }
.dash-course-arrow { color: var(--muted); }

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 600px) {
  .hub-nav { padding: 0 1rem; }
  .hero { padding: 60px 1rem 50px; }
  .courses, .features { padding: 50px 1rem; }
  .hero-stats { gap: 1.5rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .login-box { padding: 1.75rem 1.25rem; }
}