/* NervIQ Design System */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=DM+Sans:wght@300;400;500&display=swap');

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

:root {
  --bg-deep: #0a0a0f;
  --bg-card: #111118;
  --bg-card-hover: #16161f;
  --bg-input: #0d0d14;
  --accent: #7c6df0;
  --accent-glow: #9b8ff5;
  --accent-dim: rgba(124,109,240,0.15);
  --warm: #e8c8a0;
  --warm-dim: rgba(232,200,160,0.15);
  --success: #4ade80;
  --success-dim: rgba(74,222,128,0.15);
  --danger: #f87171;
  --text-primary: #eeeef0;
  --text-secondary: #8a8a9a;
  --text-muted: #55556a;
  --breath-start: #7c6df0;
  --breath-end: #c4a0e8;
  --border: rgba(255,255,255,0.06);
  --border-accent: rgba(124,109,240,0.3);
}

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
  min-height: 100vh;
}

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

a { color: var(--accent-glow); text-decoration: none; }
a:hover { color: var(--warm); }

/* Ambient background */
.ambient {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
}
.ambient::before {
  content: '';
  position: absolute;
  top: -20%; left: -10%;
  width: 60%; height: 60%;
  background: radial-gradient(ellipse, rgba(124,109,240,0.06) 0%, transparent 70%);
  animation: drift 20s ease-in-out infinite;
}
.ambient::after {
  content: '';
  position: absolute;
  bottom: -10%; right: -10%;
  width: 50%; height: 50%;
  background: radial-gradient(ellipse, rgba(196,160,232,0.04) 0%, transparent 70%);
  animation: drift 25s ease-in-out infinite reverse;
}
@keyframes drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 15px) scale(0.95); }
}

.content { position: relative; z-index: 1; }

/* Navigation */
.nav {
  padding: 20px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.nav-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-primary);
  text-decoration: none;
  z-index: 11;
}
.nav-logo span { color: var(--accent-glow); }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
  letter-spacing: 0.5px;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a.active { color: var(--accent-glow); }

/* Mobile hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 11;
  -webkit-tap-highlight-color: transparent;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: all 0.3s;
  border-radius: 2px;
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: none;
  border-radius: 6px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  text-transform: uppercase;
}
.btn-primary {
  background: var(--accent);
  color: white;
}
.btn-primary:hover {
  background: var(--accent-glow);
  box-shadow: 0 0 30px rgba(124,109,240,0.3);
  color: white;
}
.btn-warm {
  background: var(--warm);
  color: var(--bg-deep);
}
.btn-warm:hover {
  background: #f0d4b0;
  box-shadow: 0 0 30px rgba(232,200,160,0.3);
  color: var(--bg-deep);
}
.btn-ghost {
  background: transparent;
  border: 1px solid var(--border-accent);
  color: var(--accent-glow);
}
.btn-ghost:hover {
  background: var(--accent-dim);
  color: var(--accent-glow);
}
.btn-sm { padding: 8px 18px; font-size: 0.75rem; }
.btn-lg { padding: 16px 36px; font-size: 0.9rem; }
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 32px;
  transition: border-color 0.2s;
}
.card:hover {
  border-color: var(--border-accent);
}

/* Forms */
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-family: 'Space Grotesk', sans-serif;
}
.form-input {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  transition: border-color 0.2s;
  outline: none;
}
.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.form-input::placeholder {
  color: var(--text-muted);
}

/* Page container */
.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}
.page-narrow {
  max-width: 600px;
}

/* Section labels */
.section-label {
  font-size: 0.65rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
  font-family: 'Space Grotesk', sans-serif;
}
.section-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 400;
  margin-bottom: 8px;
}
.section-sub {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin: 24px 0;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px 20px;
  text-align: center;
}
.stat-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 600;
  color: var(--accent-glow);
  line-height: 1;
}
.stat-label {
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 8px;
}

/* Alert/Toast */
.alert {
  padding: 14px 20px;
  border-radius: 6px;
  font-size: 0.9rem;
  margin-bottom: 20px;
}
.alert-success {
  background: var(--success-dim);
  color: var(--success);
  border: 1px solid rgba(74,222,128,0.2);
}
.alert-error {
  background: rgba(248,113,113,0.1);
  color: var(--danger);
  border: 1px solid rgba(248,113,113,0.2);
}
.alert-info {
  background: var(--accent-dim);
  color: var(--accent-glow);
  border: 1px solid var(--border-accent);
}

/* Badge */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.65rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
}
.badge-premium {
  background: var(--accent-dim);
  color: var(--accent-glow);
}
.badge-free {
  background: var(--warm-dim);
  color: var(--warm);
}

/* Footer */
.site-footer {
  padding: 48px 24px;
  text-align: center;
  border-top: 1px solid var(--border);
  margin-top: 80px;
}
.site-footer p {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}
.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 16px;
}
.footer-links a {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer-links a:hover { color: var(--text-secondary); }

/* Divider */
.divider {
  width: 1px;
  height: 80px;
  background: linear-gradient(to bottom, transparent, var(--text-muted), transparent);
  margin: 40px auto;
}

/* Hide/show based on auth */
.auth-only { display: none; }
.guest-only { display: block; }
body.logged-in .auth-only { display: block; }
body.logged-in .guest-only { display: none; }

/* Mobile */
@media (max-width: 768px) {
  .nav { padding: 16px 20px; }
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-deep);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 28px;
    z-index: 10;
    padding: 80px 24px 40px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1.1rem; }
  .nav-links #auth-nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: 12px;
  }
  .page { padding: 24px 16px 60px; }
  .card { padding: 24px 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .btn-lg { padding: 14px 28px; }
  .footer-links { flex-wrap: wrap; gap: 16px; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
}

/* Utility */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent-glow); }
.text-warm { color: var(--warm); }
.mt-2 { margin-top: 16px; }
.mt-4 { margin-top: 32px; }
.mb-2 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 32px; }
.hidden { display: none !important; }