:root {
  --bg-deep: #0a1628;
  --bg-card: rgba(255, 255, 255, 0.04);
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-soft: rgba(59, 130, 246, 0.15);
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: rgba(148, 163, 184, 0.18);
  --success: #22c55e;
  --radius: 14px;
  --shadow: 0 24px 64px rgba(0, 0, 0, 0.35);
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg-deep);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 20%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.bg-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}

.bg-glow--1 {
  top: -200px;
  right: -100px;
  background: #1d4ed8;
}

.bg-glow--2 {
  bottom: -250px;
  left: -150px;
  background: #0ea5e9;
}

.page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text);
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--accent), #0ea5e9);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.35);
}

.logo-text {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.logo-domain {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
}

.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.5rem 4rem;
  max-width: 720px;
  margin: 0 auto;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: var(--accent-soft);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 999px;
  font-size: 0.85rem;
  color: #93c5fd;
  margin-bottom: 1.5rem;
}

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

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

.hero h1 {
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.25;
  margin-bottom: 2.5rem;
}

.hero h1 span {
  background: linear-gradient(135deg, #60a5fa, #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 2.5rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 1rem 2rem;
  min-width: 220px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn:focus-visible,
.logo:focus-visible,
.back-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #2563eb);
  color: white;
  box-shadow: 0 12px 32px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
  box-shadow: 0 16px 40px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(148, 163, 184, 0.35);
}

.btn svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  width: 100%;
  max-width: 720px;
  margin-top: 3.5rem;
}

.feature {
  padding: 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: left;
}

.feature-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.feature h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.feature p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer {
  padding: 1.5rem 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

/* Placeholder pages */
.placeholder-page {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  text-align: center;
}

.placeholder-card {
  max-width: 480px;
  padding: 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
}

.placeholder-card h1 {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.placeholder-card p {
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}

.back-link:hover {
  text-decoration: underline;
}

@media (max-width: 540px) {
  .header {
    padding: 1rem;
  }

  .actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    min-width: unset;
    width: 100%;
  }
}