:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #f0883e;
  --accent-hover: #ffa657;
  --green: #3fb950;
  --red: #f85149;
  --yellow: #d29922;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

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

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}

.logo span {
  color: var(--text);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.card h2 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
  cursor: pointer;
  font-weight: 500;
  transition: background 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

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

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

.btn-danger {
  background: var(--red);
  color: #fff;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.form-group input {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 1rem;
}

.form-group input:focus {
  outline: none;
  border-color: var(--accent);
}

.auth-card {
  max-width: 400px;
  margin: 4rem auto;
}

.auth-card h1 {
  text-align: center;
  margin-bottom: 0.5rem;
}

.auth-card p.sub {
  text-align: center;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.error {
  color: var(--red);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

.success {
  color: var(--green);
  font-size: 0.9rem;
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-online {
  background: rgba(63, 185, 80, 0.2);
  color: var(--green);
}

.badge-offline {
  background: rgba(248, 81, 73, 0.2);
  color: var(--red);
}

.worker-grid {
  display: grid;
  gap: 1rem;
}

.worker-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
}

.worker-card .stats {
  display: flex;
  gap: 1.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.worker-card .stats strong {
  color: var(--text);
  display: block;
  font-size: 1.1rem;
}

.credentials {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  font-family: monospace;
  font-size: 0.9rem;
  margin: 1rem 0;
  word-break: break-all;
}

.credentials dt {
  color: var(--muted);
  margin-top: 0.5rem;
}

.credentials dd {
  color: var(--accent);
}

.gpu-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.gpu-table th,
.gpu-table td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.gpu-table th {
  color: var(--muted);
  font-weight: 500;
}

.actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.empty {
  text-align: center;
  color: var(--muted);
  padding: 3rem 1rem;
}

.hero {
  text-align: center;
  padding: 4rem 1rem;
}

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

.hero p {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.nav-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.nav-links .email {
  color: var(--muted);
  font-size: 0.9rem;
}

.pool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.pool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  transition: border-color 0.15s;
}

.pool-card:hover {
  border-color: var(--accent);
}

.pool-card h3 {
  margin-bottom: 0.25rem;
}

.pool-card .pool-meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.coin-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.coin-chip {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
}

.coin-chip:hover,
.coin-chip.active {
  border-color: var(--accent);
  color: var(--accent);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 100;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: min(520px, 100%);
  max-height: 90vh;
  overflow-y: auto;
  padding: 1.5rem;
}

.modal h2 {
  margin-bottom: 0.25rem;
}

.modal .subtitle {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.oc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.oc-field label {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  margin-bottom: 0.25rem;
}

.oc-field input[type="range"] {
  width: 100%;
}

.filter-bar {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 800px) {
  .filter-bar {
    grid-template-columns: 1fr 1fr;
  }
  .oc-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .worker-card {
    grid-template-columns: 1fr;
  }
  .filter-bar {
    grid-template-columns: 1fr;
  }
}