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

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg: #000;
  --surface: rgba(24, 24, 27, 0.5);
  --surface-solid: #18181b;
  --border: #27272a;
  --border-hover: #3f3f46;
  --text: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-dim: #52525b;
  --accent: #34d399;
  --accent-hover: #6ee7b7;
  --accent-subtle: rgba(52, 211, 153, 0.08);
  --danger: #f87171;
  --radius: 12px;
  --radius-lg: 16px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --mono: 'SF Mono', 'Fira Code', 'JetBrains Mono', monospace;
}

html { font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

::selection { background: var(--accent-subtle); color: var(--accent); }

/* Layout */
.container { max-width: 720px; margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 420px; margin: 0 auto; padding: 0 24px; }

/* Nav */
nav {
  padding: 20px 0;
}
nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  font-size: 15px;
  font-weight: 400;
  color: var(--text-secondary);
}
.nav-brand b { color: var(--text); font-weight: 600; }
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-links .btn-nav {
  padding: 8px 16px;
  background: var(--text);
  color: var(--bg);
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s;
}
.nav-links .btn-nav:hover { background: #d4d4d8; }

/* Hero */
.hero {
  padding: 80px 0 40px;
  text-align: center;
}
.hero h1 {
  font-size: 42px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, #34d399, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto 32px;
  line-height: 1.7;
}
.hero-install {
  display: inline-block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 24px;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 48px;
  backdrop-filter: blur(12px);
}
.hero-install b { color: var(--accent); font-weight: 500; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s;
}
.btn:hover { border-color: var(--border-hover); text-decoration: none; background: var(--surface); }
.btn-primary {
  background: linear-gradient(135deg, #34d399, #06b6d4);
  border: none;
  color: #000;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius);
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}
.btn:disabled:hover { opacity: 0.5; transform: none; background: transparent; }
.btn-full { width: 100%; }
.btn-lg { padding: 14px 32px; font-size: 15px; border-radius: var(--radius-lg); }

/* Divider */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 56px 0;
}

/* Section label */
.section-label {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 8px;
}
.section-sublabel {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* Stats row */
.data-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 32px auto;
  max-width: 540px;
}
.data-cell {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  backdrop-filter: blur(12px);
}
.data-cell h4 {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.data-cell .value {
  font-size: 28px;
  font-weight: 700;
}
.data-cell .value.accent { color: var(--accent); }

/* BYOK Provider Grid */
.byok { padding: 0 0 48px; }
.provider-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.provider-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  transition: all 0.2s;
  cursor: default;
  backdrop-filter: blur(12px);
}
.provider-card:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.provider-card.active {
  border-color: var(--accent);
  background: var(--accent-subtle);
}
.provider-icon {
  color: var(--text-dim);
  margin-bottom: 10px;
  display: flex;
  justify-content: center;
}
.provider-card.active .provider-icon { color: var(--accent); }
.provider-name {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 2px;
}
.provider-model {
  font-size: 12px;
  color: var(--text-dim);
}

/* Pricing */
.pricing { padding: 48px 0; }
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.pricing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(12px);
}
.pricing-card.featured {
  border-color: var(--accent);
  background: var(--accent-subtle);
}
.pricing-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.pricing-card.featured h3 { color: var(--accent); }
.pricing-price {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}
.pricing-price span {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-dim);
}
.pricing-note {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 20px;
}
.pricing-features {
  list-style: none;
  margin: 20px 0;
  font-size: 14px;
}
.pricing-features li {
  padding: 5px 0;
  color: var(--text-secondary);
}
.pricing-features li::before {
  content: '\2713  ';
  color: var(--accent);
  font-weight: 600;
}

/* How it works */
.features { padding-bottom: 48px; }
.steps {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 2.4;
}
.steps .num {
  color: var(--text-dim);
  margin-right: 8px;
}
.steps .comment { color: var(--accent); }

/* Status indicator */
.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}
.status-dot.off { background: var(--text-dim); }

/* Loading dots animation */
.loading-dots {
  animation: pulse-dots 1.4s infinite ease-in-out;
}
@keyframes pulse-dots {
  0%, 80%, 100% { opacity: 0.3; }
  40% { opacity: 1; }
}

/* OAuth buttons */
.oauth-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}
.btn-oauth {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  gap: 10px;
  padding: 12px 20px;
  font-size: 14px;
  backdrop-filter: blur(12px);
}
.btn-oauth:hover { border-color: var(--border-hover); background: var(--surface-solid); transform: translateY(-1px); }
.btn-oauth svg { flex-shrink: 0; }

.oauth-divider {
  display: flex;
  align-items: center;
  margin: 20px 0;
  gap: 12px;
}
.oauth-divider::before,
.oauth-divider::after {
  content: '';
  flex: 1;
  border-top: 1px solid var(--border);
}
.oauth-divider span {
  font-size: 13px;
  color: var(--text-dim);
}

/* Forms */
.form-page { padding: 80px 0; }
.form-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  background: var(--surface);
  backdrop-filter: blur(12px);
}
.form-card h1 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}
.form-card > p {
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 28px;
}
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.form-group input {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
.form-group input:focus { border-color: var(--accent); }
.form-group input::placeholder { color: var(--text-dim); }
.form-error {
  color: var(--danger);
  font-size: 13px;
  margin-top: 8px;
  display: none;
}
.form-footer {
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-dim);
}

/* Dashboard */
.dashboard { padding: 48px 0; }
.dash-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}
.dash-header h1 { font-size: 20px; font-weight: 600; }
.dash-section {
  margin-bottom: 32px;
}

/* Tier badge */
.badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: 100px;
}
.badge-premium {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-subtle);
}
.badge-free {
  color: var(--text-dim);
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  font-size: 13px;
  color: var(--text-dim);
}
footer .container {
  display: flex;
  justify-content: space-between;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
  font-size: 14px;
  z-index: 999;
  display: none;
  backdrop-filter: blur(12px);
}
.toast.error { border-color: var(--danger); color: var(--danger); }
.toast.success { border-color: var(--accent); }

/* Responsive */
@media (max-width: 640px) {
  .hero h1 { font-size: 28px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .data-grid { grid-template-columns: 1fr; }
  .provider-grid { grid-template-columns: 1fr 1fr; }
  footer .container { flex-direction: column; gap: 8px; }
}