/* ─── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-top:       #0d1b2a;
  --bg-mid:       #1b2d3e;
  --bg-bot:       #243447;
  --accent:       #4a9eff;
  --accent-dim:   rgba(74,158,255,0.15);
  --green:        #30d158;
  --card-bg:      rgba(255,255,255,0.06);
  --card-border:  rgba(255,255,255,0.10);
  --text:         #ffffff;
  --text-dim:     rgba(255,255,255,0.55);
  --text-dimmer:  rgba(255,255,255,0.30);
  --radius-card:  20px;
  --radius-pill:  100px;
  --nav-height:   64px;
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg-top);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ─── Nav ───────────────────────────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  background: rgba(13,27,42,0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--card-border);
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-brand .brand-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, #1e4a7a, #0d2a47);
  border: 1px solid rgba(74,158,255,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--text-dim);
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

/* ─── Hero ──────────────────────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--nav-height) + 60px) 24px 100px;
  background: linear-gradient(160deg, var(--bg-top) 0%, var(--bg-mid) 60%, var(--bg-bot) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 50% -10%, rgba(74,158,255,0.10) 0%, transparent 65%),
    radial-gradient(ellipse 50% 40% at 90% 90%, rgba(74,158,255,0.06) 0%, transparent 60%);
  pointer-events: none;
}

/* Mountain silhouette */
.hero::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 200px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 200' preserveAspectRatio='none'%3E%3Cpath d='M0,200 L0,140 L120,80 L240,120 L360,40 L480,100 L600,20 L720,80 L840,30 L960,90 L1080,50 L1200,110 L1320,60 L1440,100 L1440,200 Z' fill='rgba(255,255,255,0.03)'/%3E%3Cpath d='M0,200 L0,160 L180,110 L360,140 L540,70 L720,120 L900,60 L1080,110 L1260,80 L1440,130 L1440,200 Z' fill='rgba(255,255,255,0.02)'/%3E%3C/svg%3E") no-repeat bottom center;
  background-size: 100% 100%;
  pointer-events: none;
}

.hero-content {
  max-width: 700px;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
  background: var(--accent-dim);
  border: 1px solid rgba(74,158,255,0.2);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 30%, rgba(255,255,255,0.7));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .tagline {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--text-dim);
  margin-bottom: 48px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 14px 26px;
  border-radius: var(--radius-pill);
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
  box-shadow: 0 4px 24px rgba(74,158,255,0.3);
  text-decoration: none;
}

.btn-primary:hover {
  background: #6aafff;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(74,158,255,0.4);
  text-decoration: none;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--card-bg);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 14px 26px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--card-border);
  transition: transform 0.15s, border-color 0.15s;
  text-decoration: none;
}

.btn-secondary:hover {
  transform: translateY(-2px);
  border-color: rgba(255,255,255,0.25);
  text-decoration: none;
}

/* ─── Apps ───────────────────────────────────────────────────────────────────── */
.apps-section {
  background: var(--bg-mid);
  padding: 100px 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-dim);
  max-width: 480px;
  margin: 0 auto;
  font-size: 1rem;
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.app-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform 0.2s, border-color 0.2s;
  text-decoration: none;
  color: inherit;
}

.app-card:hover {
  transform: translateY(-4px);
  border-color: rgba(74,158,255,0.3);
  text-decoration: none;
}

.app-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
}

.app-icon {
  width: 64px;
  height: 64px;
  border-radius: 15px;
  flex-shrink: 0;
  object-fit: cover;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}

.app-card-name {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 2px;
}

.app-card-platform {
  font-size: 0.78rem;
  color: var(--text-dimmer);
}

.app-card-desc {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.65;
}

.app-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: auto;
}

.app-card-link svg {
  transition: transform 0.15s;
}

.app-card:hover .app-card-link svg {
  transform: translateX(3px);
}

/* ─── Values ─────────────────────────────────────────────────────────────────── */
.values-section {
  background: linear-gradient(180deg, var(--bg-mid) 0%, var(--bg-top) 100%);
  padding: 100px 24px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.value-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
}

.value-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.value-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.value-card p {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.6;
}

/* ─── Footer ────────────────────────────────────────────────────────────────── */
footer {
  background: var(--bg-top);
  border-top: 1px solid var(--card-border);
  padding: 48px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dim);
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.8rem;
  color: var(--text-dimmer);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--text-dim);
  text-decoration: none;
}

/* ─── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  nav { padding: 0 20px; }
  .nav-links { gap: 18px; }
  .apps-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr 1fr; }
  footer { padding: 40px 20px; flex-direction: column; align-items: flex-start; }
}

@media (max-width: 400px) {
  .values-grid { grid-template-columns: 1fr; }
}