:root {
  --font-body: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
  --font-display: "Space Grotesk", "Avenir Next", sans-serif;
  --bg: #ecf3f8;
  --ink: #0f2a3f;
  --ink-soft: #374c5e;
  --panel: rgba(255, 255, 255, 0.8);
  --panel-border: rgba(30, 74, 106, 0.16);
  --line: rgba(30, 74, 106, 0.15);
  --accent: #0d7c7a;
  --accent-strong: #095b59;
  --accent-soft: rgba(13, 124, 122, 0.14);
}

html.dark {
  --bg: #0f1419;
  --ink: #e4e8ec;
  --ink-soft: #94a3b3;
  --panel: rgba(22, 29, 38, 0.95);
  --panel-border: rgba(200, 220, 240, 0.12);
  --line: rgba(200, 220, 240, 0.14);
  --accent: #2ec4b6;
  --accent-strong: #20a99c;
  --accent-soft: rgba(46, 196, 182, 0.14);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  font-family: var(--font-body);
  line-height: 1.7;
  color: var(--ink);
  padding: 3rem 1rem;
  background:
    radial-gradient(1600px 1000px at 0% 0%, rgba(180, 60, 120, 0.6), transparent 70%),
    radial-gradient(1400px 900px at 55% 0%, rgba(220, 150, 50, 0.45), transparent 60%),
    radial-gradient(1600px 1000px at 100% 100%, rgba(30, 180, 170, 0.6), transparent 70%),
    linear-gradient(165deg, #f8fbfd 0%, var(--bg) 56%, #e7eef4 100%);
}

html.dark body {
  background:
    radial-gradient(1600px 1000px at 0% 0%, rgba(160, 50, 100, 0.55), transparent 70%),
    radial-gradient(1400px 900px at 55% 0%, rgba(200, 140, 40, 0.4), transparent 60%),
    radial-gradient(1600px 1000px at 100% 100%, rgba(30, 160, 150, 0.55), transparent 70%),
    #0f1419;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 3rem 2.5rem;
  backdrop-filter: blur(24px);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.08);
}

html.dark .container {
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.4);
}

/* -- Theme toggle -- */
.theme-toggle {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--panel-border);
  background: var(--panel);
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

.theme-toggle:hover { background: var(--accent-soft); }

html.dark .theme-toggle {
  background: rgba(28, 35, 43, 0.78);
}

/* -- Nav bar -- */
.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent);
  text-decoration: none;
}

.nav-logo {
  width: 28px;
  height: 28px;
}

.nav a {
  font-size: 0.85rem;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.15s;
}

.nav a:hover { color: var(--accent); }
.nav a.active { color: var(--accent); font-weight: 600; }

.nav-spacer { flex: 1; }

/* -- Typography -- */
h1 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--ink);
}

.updated {
  color: var(--ink-soft);
  font-size: 0.85rem;
  margin-bottom: 2rem;
}

h2 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin: 2rem 0 0.5rem;
  color: var(--ink);
}

p, li {
  font-size: 0.92rem;
  margin-bottom: 0.75rem;
  color: var(--ink);
}

ul { padding-left: 1.5rem; }

a { color: var(--accent); transition: color 0.15s; }
a:hover { color: var(--accent-strong); }

strong { font-weight: 600; }

/* -- Tables -- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.85rem;
}

th, td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--line);
  color: var(--ink);
}

th {
  background: var(--accent-soft);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* -- Footer -- */
.footer {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.8rem;
  color: var(--ink-soft);
}

/* -- Landing page -- */
.landing-hero {
  text-align: center;
  padding: 2rem 0 1rem;
}

.landing-logo {
  width: 72px;
  height: 72px;
  margin-bottom: 1rem;
}

.landing-hero h1 {
  font-size: 2.25rem;
  margin-bottom: 0.5rem;
}

.landing-hero .tagline {
  font-size: 1rem;
  color: var(--ink-soft);
  margin-bottom: 2.5rem;
}

.landing-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 320px;
  margin: 0 auto;
}

.landing-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-radius: 10px;
  background: var(--accent-soft);
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
  transition: border-color 0.15s, background 0.15s;
}

.landing-link:hover {
  border-color: var(--accent);
  background: rgba(13, 124, 122, 0.12);
}

html.dark .landing-link:hover {
  background: rgba(46, 196, 182, 0.16);
}

.landing-link-icon {
  width: 2rem;
  text-align: center;
  flex-shrink: 0;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.landing-link-text {
  display: flex;
  flex-direction: column;
}

.landing-link-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--ink);
}

.landing-link-desc {
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin: 0;
}