/* ==========================================================================
   Cavio – Static Hosting Stylesheet
   Designed for simplicity, readability, trust, and mobile responsiveness.
   Zero external dependencies / CDN-free / Tracking-free.
   ========================================================================== */

:root {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --color-border-subtle: #cbd5e1;
  --color-primary: #0f172a;
  --color-accent: #1d4ed8;
  --color-accent-hover: #1e40af;
  --color-tag-bg: #e2e8f0;
  --color-tag-text: #334155;
  --color-code-bg: #f1f5f9;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --max-width: 800px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2.5rem;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Header */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--color-text-primary);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand:hover {
  text-decoration: none;
}

.brand-icon {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--color-text-secondary);
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-text-primary);
  text-decoration: none;
  font-weight: 500;
}

/* Main Content */
main {
  flex: 1;
  padding: var(--spacing-xl) 0;
}

/* Hero & Cards */
.hero {
  text-align: center;
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-tag-text);
  background-color: var(--color-tag-bg);
  border-radius: 9999px;
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hero h1 {
  font-size: 2.5rem;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.hero .subtitle {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.hero .description {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.status-box {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  display: inline-block;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

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

.feature-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
}

.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Document & Legal Content */
.doc-article {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.doc-header {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.doc-header h1 {
  font-size: 2rem;
  line-height: 1.25;
  letter-spacing: -0.025em;
  margin-bottom: var(--spacing-sm);
}

.meta-list {
  list-style: none;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.meta-list li strong {
  color: var(--color-text-secondary);
}

.doc-content h2 {
  font-size: 1.35rem;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-primary);
}

.doc-content h2:first-of-type {
  border-top: none;
  margin-top: 0;
  padding-top: 0;
}

.doc-content h3 {
  font-size: 1.1rem;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.doc-content p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

.doc-content ul, .doc-content ol {
  margin-bottom: var(--spacing-md);
  padding-left: 1.5rem;
  color: var(--color-text-secondary);
}

.doc-content li {
  margin-bottom: var(--spacing-xs);
}

.doc-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--color-code-bg);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  color: var(--color-text-primary);
}

.contact-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-top: var(--spacing-md);
}

.contact-card p {
  margin-bottom: 0.35rem;
}

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

/* Support Page */
.support-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.support-card h1 {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.support-card .lead {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  margin-bottom: var(--spacing-xl);
}

.email-box {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.email-box .label {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xs);
}

.email-box .email-address {
  font-size: 1.25rem;
  font-weight: 600;
}

.support-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  font-size: 0.9375rem;
}

/* Footer */
.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
  margin-top: auto;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  text-align: center;
}

@media (min-width: 640px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-links a {
  color: var(--color-text-secondary);
}

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

/* Responsive adjustments */
@media (max-width: 640px) {
  .doc-article {
    padding: var(--spacing-lg);
  }
  .hero h1 {
    font-size: 2rem;
  }
}