/* ─── Project Aegis — Public Landing Page Styles ─── */

:root {
  --bg: #0f1117;
  --bg-card: #1a1d27;
  --bg-nav: rgba(15, 17, 23, 0.95);
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --border: #2d3148;
  --green: #22c55e;
  --radius: 12px;
  --max-width: 1100px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-hover);
}

/* ─── Nav ─── */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bg-nav);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--text);
}

/* ─── Buttons ─── */
.btn {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-outline {
  padding: 0.45rem 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ─── Hero ─── */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 10rem 1.5rem 6rem;
  text-align: center;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  max-width: 640px;
  margin: 1.5rem auto 2.5rem;
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.cta-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── Features ─── */
.features {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 1.5rem;
}

.features h2,
.how-it-works h2,
.privacy h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 3rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color 0.2s, transform 0.2s;
}

.feature-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ─── How It Works ─── */
.how-it-works {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 1.5rem;
}

.steps {
  display: grid;
  gap: 2rem;
  max-width: 680px;
  margin: 0 auto;
}

.step {
  display: grid;
  grid-template-columns: 48px 1fr;
  grid-template-rows: auto auto;
  column-gap: 1.25rem;
  row-gap: 0.25rem;
  align-items: start;
}

.step-number {
  grid-row: 1 / 3;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 1.2rem;
  border-radius: 50%;
}

.step h3 {
  font-size: 1.05rem;
  font-weight: 600;
  align-self: end;
}

.step p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.step code {
  background: var(--bg-card);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--accent);
}

/* ─── Privacy ─── */
.privacy {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 1.5rem;
}

.privacy-content {
  max-width: 680px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}

.privacy-content ul {
  list-style: none;
  padding: 0;
}

.privacy-content li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.privacy-content li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}

.privacy-content > p {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

footer a {
  color: var(--text-muted);
}

footer a:hover {
  color: var(--accent);
}

/* ─── Responsive ─── */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 2.25rem;
  }

  .subtitle {
    font-size: 1rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .nav-links a:not(.btn-outline) {
    display: none;
  }
}