:root {
  color-scheme: dark;
  --bg: #0f1115;
  --bg-elevated: #171a21;
  --border: #2a2f3a;
  --text: #e8eaed;
  --muted: #9aa0a6;
  --accent: #6c8cff;
  --accent-hover: #8aa4ff;
  --max: 1080px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(15, 17, 21, 0.92);
  backdrop-filter: blur(8px);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
}

.site-brand img {
  width: 36px;
  height: 36px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--muted);
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--text);
}

.site-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  border-color: #46506a;
}

.site-main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 48px 24px 72px;
}

.hero {
  display: grid;
  gap: 24px;
  padding: 32px 0 16px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.hero p {
  margin: 0;
  max-width: 720px;
  color: var(--muted);
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 40px;
}

.feature-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}

.feature-card h2 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.page-title {
  margin: 0 0 12px;
  font-size: 2rem;
}

.page-lead {
  margin: 0 0 28px;
  color: var(--muted);
  max-width: 720px;
}

.content-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}

.content-card p {
  margin: 0 0 12px;
  color: var(--muted);
}

.content-card p:last-child {
  margin-bottom: 0;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.auth-wrap {
  min-height: calc(100vh - 73px);
  display: grid;
  place-items: center;
  padding: 24px;
}

.auth-box {
  width: min(420px, 100%);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px 24px;
}

.auth-box h1 {
  margin: 0 0 6px;
  font-size: 1.5rem;
  text-align: center;
}

.auth-box .subtitle {
  margin: 0 0 20px;
  text-align: center;
  color: var(--muted);
}

.auth-box input {
  width: 100%;
  margin-bottom: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #0c0e12;
  color: var(--text);
  font: inherit;
}

.auth-box .hint {
  color: var(--muted);
  font-size: 0.9rem;
}

.auth-box .switch-link {
  margin: 12px 0 0;
  text-align: center;
  font-size: 0.9rem;
}

.auth-box .switch-link a {
  color: var(--accent);
}

.auth-status {
  min-height: 1.2em;
  margin-top: 10px;
  font-size: 0.9rem;
  color: var(--muted);
}

.auth-status.is-error {
  color: #ff8a8a;
}

.hidden {
  display: none !important;
}