:root {
  color-scheme: dark;
  --bg: #0b0f18;
  --panel: #121828;
  --panel-soft: #141c2f;
  --text: #e9f4ff;
  --muted: #9eb6d2;
  --accent: #25d0ff;
  --accent-strong: #13a5cc;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

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

body {
  margin: 0;
  background: radial-gradient(circle at 20% 20%, rgba(37, 208, 255, 0.08), transparent 30%),
    radial-gradient(circle at 80% 0%, rgba(37, 208, 255, 0.08), transparent 25%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

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

h1,
h2,
h3 {
  margin: 0 0 0.5rem;
  line-height: 1.2;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
}

.hero {
  padding: 4.5rem 1.25rem 3.5rem;
  background: linear-gradient(135deg, rgba(37, 208, 255, 0.08), rgba(37, 208, 255, 0));
  border-bottom: 1px solid var(--border);
}

.hero__content {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  gap: 1rem;
}

.eyebrow {
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0;
}

.hook {
  color: var(--muted);
  max-width: 700px;
  margin: 0;
}

.hero__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.75rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text);
  background: transparent;
  cursor: pointer;
  font-weight: 600;
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease, background 120ms ease;
}

.button:hover {
  transform: translateY(-1px);
  border-color: rgba(37, 208, 255, 0.6);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.25);
}

.button--solid {
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #041018;
  border-color: transparent;
}

.button--ghost {
  background: rgba(255, 255, 255, 0.04);
}

.panel {
  margin-top: 2.5rem;
  padding: 1.8rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.panel--glow {
  background: linear-gradient(180deg, rgba(37, 208, 255, 0.08), rgba(18, 27, 48, 0.9));
}

.panel__header {
  margin-bottom: 0.75rem;
}

.panel__body {
  color: var(--muted);
  display: grid;
  gap: 0.9rem;
}

.label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: 0 0 0.35rem;
}

.demo {
  display: grid;
  gap: 1.2rem;
}

.demo__status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.2rem;
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
}

.badge {
  padding: 0.65rem 1rem;
  border-radius: 12px;
  background: rgba(37, 208, 255, 0.12);
  color: var(--accent);
  font-weight: 700;
  border: 1px solid rgba(37, 208, 255, 0.5);
}

.demo__doors {
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1rem 1.2rem;
}

.door-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.75rem;
}

.door {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.2rem;
  padding: 0.75rem 0.85rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  cursor: pointer;
  color: var(--text);
  transition: border-color 120ms ease, transform 120ms ease, background 120ms ease;
}

.door:hover {
  border-color: rgba(37, 208, 255, 0.7);
  transform: translateY(-1px);
  background: rgba(37, 208, 255, 0.08);
}

.door__label {
  font-weight: 700;
}

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

.demo__controls {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.demo__breadcrumb {
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 0.85rem 1rem;
}

#breadcrumbText {
  margin: 0;
  color: var(--text);
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.devlog {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.7rem;
}

.devlog__date {
  color: var(--accent);
  font-weight: 700;
  margin-right: 0.5rem;
}

.footer {
  margin-top: 2.5rem;
  padding: 1.5rem 1.25rem 2.5rem;
  border-top: 1px solid var(--border);
  background: rgba(4, 6, 12, 0.8);
}

.footer__content {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.7rem;
  color: var(--muted);
}

.back-to-top {
  display: inline-block;
  margin-top: 0.8rem;
  color: var(--accent);
  font-weight: 700;
}

@media (max-width: 720px) {
  .hero {
    padding-top: 3.5rem;
  }

  .demo__status {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__actions {
    width: 100%;
  }

  .button {
    width: auto;
  }
}