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

:root {
  --color-bg: #0a0e17;
  --color-surface: #111827;
  --color-surface-alt: #1a2236;
  --color-border: #1e293b;
  --color-text: #e2e8f0;
  --color-text-muted: #94a3b8;
  --color-accent: #6366f1;
  --color-accent-light: #818cf8;
  --color-accent-glow: rgba(99, 102, 241, 0.25);
  --color-green: #22d3ee;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1120px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Navbar ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent-light);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* ===== Hero ===== */
.hero {
  padding: 120px 0 100px;
  text-align: center;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, var(--color-accent-glow), transparent),
    var(--color-bg);
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 24px;
}

.accent {
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  max-width: 600px;
  margin: 0 auto 40px;
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
}

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

.btn-primary:hover {
  background: var(--color-accent-light);
  box-shadow: 0 0 24px var(--color-accent-glow);
}

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

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

/* ===== Section Shared ===== */
.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.section-sub {
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: 56px;
  font-size: 1.05rem;
}

/* ===== Services ===== */
.services {
  padding: 100px 0;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.service-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 40px 32px;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.service-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 32px var(--color-accent-glow);
}

.service-card.featured {
  border-color: var(--color-accent);
  background: linear-gradient(160deg, var(--color-surface-alt), var(--color-surface));
}

.badge {
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.service-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  color: var(--color-accent-light);
}

.service-icon svg {
  width: 100%;
  height: 100%;
}

.service-card h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.service-card p {
  color: var(--color-text-muted);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-list li {
  color: var(--color-text-muted);
  font-size: 0.88rem;
  padding-left: 20px;
  position: relative;
}

.feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* ===== Why μCloud ===== */
.why {
  padding: 100px 0;
  background: var(--color-surface);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 40px;
}

.feature {
  text-align: center;
}

.feature-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 16px;
  color: var(--color-accent-light);
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ===== Contact ===== */
.contact {
  padding: 100px 0;
}

.contact-box {
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 48px 32px;
  max-width: 520px;
  margin: 0 auto;
}

.contact-email {
  display: inline-block;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-accent-light);
  text-decoration: none;
  margin-bottom: 12px;
  transition: color 0.2s;
}

.contact-email:hover {
  color: var(--color-green);
}

.contact-note {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-accent-light);
}

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

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .nav-links {
    gap: 20px;
  }

  .hero {
    padding: 80px 0 60px;
  }

  .hero h1 {
    font-size: 2rem;
  }

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

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

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}