:root {
  --canvas: #070b13;
  --surface: #121826;
  --surface-raised: #1a2234;
  --surface-soft: rgba(255, 255, 255, 0.045);
  --border: rgba(188, 215, 255, 0.12);
  --border-strong: rgba(188, 215, 255, 0.24);
  --text-primary: #f7fbff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --action: #09c9f5;
  --action-hover: #35d8fa;
  --action-gradient: linear-gradient(135deg, #6c3eff 0%, #007bff 52%, #06d4ff 100%);
  --success: #35d39a;
  --warning: #f6c85f;
  --danger: #ff6b88;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

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

body {
  background-color: var(--canvas);
  background-image: 
    radial-gradient(circle at 15% 10%, rgba(8, 199, 243, 0.12), transparent 30%),
    radial-gradient(circle at 90% 18%, rgba(8, 126, 232, 0.10), transparent 27%);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
}

.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

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

.logo-badge {
  background: var(--action-gradient);
  color: #fff;
  font-weight: 800;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  letter-spacing: 0.5px;
}

h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  background: rgba(53, 211, 154, 0.15);
  color: var(--success);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid rgba(53, 211, 154, 0.3);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

nav.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: var(--surface-soft);
}

.tab-btn.active {
  color: #fff;
  background: var(--surface-raised);
  border-bottom: 2px solid var(--action);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Cards & Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.stat-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  margin-bottom: 24px;
}

.card h2 {
  font-size: 18px;
  margin-bottom: 6px;
}

.card p.desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

/* Forms & Inputs */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

input, select, textarea {
  background: var(--surface-raised);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 10px 12px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--action);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid var(--border-strong);
  background: var(--surface-soft);
  color: var(--text-primary);
  transition: all 0.2s;
}

.btn:hover {
  background: var(--surface-raised);
  border-color: var(--action);
}

.btn-primary {
  background: var(--action-gradient);
  border-color: transparent;
  color: #fff;
}

.btn-primary:hover {
  box-shadow: 0 0 15px rgba(9, 201, 245, 0.4);
}

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

.btn-danger {
  color: var(--danger);
  border-color: rgba(255, 107, 136, 0.3);
}

.btn-danger:hover {
  background: rgba(255, 107, 136, 0.1);
}

/* Tables */
.table-responsive {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background: var(--surface-raised);
  padding: 10px 14px;
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-strong);
}

td {
  padding: 12px 14px;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  max-width: 650px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 24px;
}

pre {
  background: var(--canvas);
  padding: 12px;
  border-radius: var(--radius-sm);
  font-family: monospace;
  font-size: 12px;
  color: #38bdf8;
  overflow-x: auto;
  margin: 12px 0;
}