:root {
  --bg: #f8f9fa;
  --card: #ffffff;
  --text: #212529;
  --muted: #6c757d;
  --primary: #0066cc;
  --primary-hover: #0052a3;
  --danger: #dc3545;
  --success: #198754;
  --warning: #ffc107;
  --border: #dee2e6;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

header {
  margin-bottom: 2rem;
}

h1 {
  margin: 0 0 0.5rem;
  font-size: 2rem;
}

p {
  margin: 0 0 1rem;
}

a {
  color: var(--primary);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}

form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

input,
textarea,
button,
select {
  font: inherit;
  padding: 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

button {
  cursor: pointer;
  background: var(--primary);
  color: white;
  border: none;
  font-weight: 500;
}

button:hover {
  background: var(--primary-hover);
}

button.secondary {
  background: var(--muted);
}

button.danger {
  background: var(--danger);
}

button.success {
  background: var(--success);
}

button.warning {
  background: var(--warning);
  color: #000;
}

.message {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  display: none;
}

.message.success {
  background: #d4edda;
  color: #155724;
  display: block;
}

.message.error {
  background: #f8d7da;
  color: #721c24;
  display: block;
}

.entry {
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}

.entry:last-child {
  border-bottom: none;
}

.entry .meta {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.entry .name {
  font-weight: 600;
}

.entry .status {
  text-transform: uppercase;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  background: #e9ecef;
}

.entry .status.pending {
  background: #fff3cd;
  color: #856404;
}

.entry .status.approved {
  background: #d4edda;
  color: #155724;
}

.entry .status.rejected {
  background: #f8d7da;
  color: #721c24;
}

.entry .status.deleted {
  background: #e2e3e5;
  color: #383d41;
}

.actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

nav {
  margin-bottom: 1.5rem;
}

nav a {
  margin-right: 1rem;
}

/* Hero */
.hero {
  text-align: center;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: 2.5rem;
  margin: 0.75rem 0 0.5rem;
}

.hero .subtitle {
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 600px;
  margin: 0 auto 1rem;
}

.hero .admin-link {
  font-size: 0.95rem;
}

/* Section headings */
section h2 {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge.demo {
  background: #e9ecef;
  color: #495057;
}

.badge.workers {
  background: #fff3e0;
  color: #ef6c00;
}

.badge.d1 {
  background: #fce4ec;
  color: #ad1457;
}

.badge.kv {
  background: #e8f5e9;
  color: #2e7d32;
}

.badge.queues {
  background: #f3e5f5;
  color: #6a1b9a;
}

.badge.github {
  background: #e3f2fd;
  color: #1565c0;
}

/* Architecture diagram */
.diagram-card {
  text-align: center;
}

.architecture-diagram {
  max-width: 760px;
  margin: 0 auto;
}

.architecture-diagram svg {
  width: 100%;
  height: auto;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}

.step {
  text-align: center;
  padding: 1rem;
  background: #f8f9fa;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.step-number {
  width: 2rem;
  height: 2rem;
  line-height: 2rem;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  font-weight: 700;
  margin: 0 auto 0.75rem;
}

.step h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

.step p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

/* Tech stack */
.tech-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.status-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
  align-items: center;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot.green {
  background: var(--success);
}

.status-dot.purple {
  background: #7b1fa2;
}

.status-dot.blue {
  background: #1976d2;
}

/* Footer */
.site-footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 2rem;
}

.site-footer p {
  margin: 0;
}

/* Responsive tweaks */
@media (max-width: 600px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero .subtitle {
    font-size: 1rem;
  }

  .steps {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 400px) {
  .steps {
    grid-template-columns: 1fr;
  }
}