/* Whistle — static coming-soon page (HTML + CSS only) */

:root {
  --bg: #080b10;
  --bg-card: #141b26;
  --border: #243044;
  --text: #edf2f7;
  --text-muted: #8fa3bc;
  --accent: #4ecdc4;
  --accent-glow: rgba(78, 205, 196, 0.22);
  --warning: #e9c46a;
  --radius: 10px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  --font: "Segoe UI", system-ui, -apple-system, Roboto, Ubuntu, Cantarell, sans-serif;
  --max-width: 980px;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font);
  color: var(--text);
  line-height: 1.6;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(78, 205, 196, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(61, 90, 128, 0.12), transparent),
    var(--bg);
}

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

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.container.narrow {
  width: min(100% - 2rem, 40rem);
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--border);
  background: rgba(17, 22, 31, 0.88);
  backdrop-filter: blur(12px);
  padding: 1rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

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

.logo:hover {
  color: var(--accent);
}

.badge {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(233, 196, 106, 0.45);
  background: rgba(233, 196, 106, 0.1);
  color: var(--warning);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* Hero */

main {
  flex: 1;
}

.hero {
  padding: 3.5rem 0 2.5rem;
}

.hero-inner {
  max-width: 42rem;
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 2.75rem);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.lead {
  margin: 0 0 2rem;
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 36rem;
}

.status-card {
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border);
  border-left: 4px solid var(--warning);
  border-radius: var(--radius);
  background: var(--bg-card);
  box-shadow: var(--shadow);
}

.status-title {
  margin: 0 0 0.35rem;
  font-weight: 600;
  font-size: 1.05rem;
}

.status-text {
  margin: 0;
  color: var(--text-muted);
}

/* Features */

.features {
  padding: 2rem 0 3rem;
}

.features h2,
.principles h2 {
  margin: 0 0 1.5rem;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.feature-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.25rem;
}

.card {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: var(--accent);
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* Principles */

.principles {
  padding: 1rem 0 3.5rem;
}

.principle-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.85rem;
}

.principle-list li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--text-muted);
}

.principle-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem 0 2.5rem;
  background: rgba(8, 11, 16, 0.6);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer-inner p {
  margin: 0;
}

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

@media (max-width: 600px) {
  .hero {
    padding-top: 2.5rem;
  }

  .badge {
    font-size: 0.72rem;
  }
}