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

:root {
  --color-bg: #0d1117;
  --color-surface: #161b22;
  --color-primary: #58a6ff;
  --color-accent: #f78166;
  --color-text: #e6edf3;
  --color-muted: #8b949e;
  --color-border: #30363d;
  --font-main: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

/* Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

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

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  background: radial-gradient(ellipse at 50% 0%, rgba(88, 166, 255, 0.1) 0%, transparent 60%);
}

.hero-content {
  max-width: 650px;
}

.badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  background: rgba(247, 129, 102, 0.15);
  color: var(--color-accent);
  border: 1px solid rgba(247, 129, 102, 0.3);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--color-text), var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  font-size: 1.2rem;
  color: var(--color-muted);
  margin-bottom: 2rem;
  line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
}

.btn-primary:hover {
  box-shadow: 0 4px 20px rgba(88, 166, 255, 0.3);
}

/* Sections */
.section {
  padding: 5rem 2rem;
}

.container {
  max-width: 900px;
  margin: 0 auto;
}

.section h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.section > .container > p {
  color: var(--color-muted);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

/* About Grid */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.about-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  transition: border-color 0.2s;
}

.about-card:hover {
  border-color: var(--color-primary);
}

.about-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.about-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
}

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

/* Features */
.features {
  background: var(--color-surface);
}

.feature-list {
  list-style: none;
  max-width: 500px;
  margin: 0 auto;
}

.feature-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-muted);
  padding-left: 1.5rem;
  position: relative;
}

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

.feature-list li:last-child {
  border-bottom: none;
}

/* Status / Progress */
.progress-bar {
  width: 100%;
  max-width: 400px;
  height: 8px;
  background: var(--color-border);
  border-radius: 999px;
  margin: 1.5rem auto 0.75rem;
  overflow: hidden;
}

.progress-fill {
  width: 25%;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 999px;
  transition: width 1s ease;
}

.status-text {
  text-align: center;
  color: var(--color-muted);
}

.progress-label {
  text-align: center;
  color: var(--color-muted);
  font-size: 0.85rem;
}

/* Contact / Signup */
.signup-form {
  display: flex;
  gap: 0.75rem;
  max-width: 450px;
  margin: 0 auto;
  flex-wrap: wrap;
  justify-content: center;
}

.signup-form input[type="email"] {
  flex: 1;
  min-width: 220px;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.signup-form input[type="email"]:focus {
  border-color: var(--color-primary);
}

.form-message {
  text-align: center;
  margin-top: 1rem;
  color: var(--color-primary);
  font-size: 0.9rem;
}

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

/* Responsive */
@media (max-width: 600px) {
  .nav-links {
    gap: 1rem;
    font-size: 0.85rem;
  }

  .hero {
    padding: 5rem 1.5rem 3rem;
  }

  .section {
    padding: 3.5rem 1.5rem;
  }
}