:root {
  --bg: #0b1120;
  --bg-card: #111827;
  --bg-elevated: #1e293b;
  --border: #334155;
  --text: #f8fafc;
  --text-muted: #94a3b8;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

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

.hidden {
  display: none !important;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 20px 64px;
}

/* Header */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-badge {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  color: #fff;
}

.brand h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}

.brand p {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

/* Navigation Tabs */
.nav-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  flex-wrap: wrap;
}

.tab-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  padding: 10px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.15s ease;
}

.tab-btn:hover {
  color: var(--text);
  background: var(--bg-elevated);
}

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

/* Cards & Grid */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.card h2 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 18px;
}

.card-subtitle {
  margin-top: 0;
  margin-bottom: 20px;
  color: var(--text-muted);
  font-size: 14px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 18px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: #cbd5e1;
}

.form-group small {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-muted);
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
select,
textarea {
  width: 100%;
  background: #0f172a;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
}

textarea {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  min-height: 110px;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
}

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

.btn-secondary {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  background: #334155;
}

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

.btn-success:hover {
  background: #059669;
}

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

.btn-danger:hover {
  background: #dc2626;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-running {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-stopped {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Container Item Card */
.service-card {
  background: #0f172a;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
}

.service-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.service-title {
  font-weight: 700;
  font-size: 15px;
  margin: 0;
}

.service-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin: 6px 0 0;
}

.service-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

/* Auth Box */
.auth-wrapper {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

/* Alerts & Code Previews */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 14px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}

.alert-error {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.4);
  color: #fca5a5;
}

.alert-success {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
  color: #6ee7b7;
}

pre.code-box {
  background: #090d16;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  overflow-x: auto;
  font-size: 12px;
  color: #e2e8f0;
  max-height: 360px;
}

.qr-box {
  background: #fff;
  padding: 12px;
  border-radius: 10px;
  display: inline-block;
  margin: 12px 0;
}