:root {
  --bg-main: #0c0d11;
  --bg-surface: #12141a;
  --bg-surface-hover: #181b23;
  --bg-input: #08090c;
  --border-color: #212530;
  --border-focus: #3b82f6;
  --text-main: #f1f5f9;
  --text-muted: #64748b;
  --text-secondary: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --radius: 8px;
  --radius-sm: 4px;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Nav */
.header {
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-surface);
  padding: 0.9rem 0;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 700;
  font-size: 1.1rem;
}

.brand-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.status-dot {
  width: 7px;
  height: 7px;
  background-color: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
}

/* Main */
.main-content {
  flex: 1;
  padding: 2rem 0 3.5rem;
}

/* Cards & Sections */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
}

.section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.35rem;
}

.section-desc {
  font-size: 0.825rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* Minimalist Stats Row */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}

.stat-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 600;
}

.stat-number {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 0.25rem;
  font-family: var(--font-mono);
}

/* Code Snippet Box */
.code-snippet {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.825rem;
  color: #38bdf8;
  overflow-x: auto;
  line-height: 1.5;
}

.code-snippet pre {
  margin: 0;
}

.copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.825rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease;
}

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

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: #333a4d;
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.3);
}

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

.btn-sm {
  padding: 0.3rem 0.65rem;
  font-size: 0.75rem;
}

/* Inputs & Forms */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.form-input, .form-select {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  color: var(--text-main);
  font-size: 0.85rem;
}

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

/* Tables */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--bg-surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
}

th {
  background: rgba(0, 0, 0, 0.2);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.015);
  color: var(--text-main);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-weight: 600;
  font-family: var(--font-mono);
}

.badge-arch {
  background: rgba(56, 189, 248, 0.1);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.badge-version {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.badge-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

/* Admin Tabs */
.admin-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  overflow-x: auto;
}

.tab-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: 0.4rem 0.85rem;
  font-size: 0.825rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
}

.tab-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-color);
}

/* Dropzone */
.dropzone {
  border: 1px dashed #383f52;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.015);
  padding: 2rem 1.5rem;
  text-align: center;
  cursor: pointer;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.05);
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  z-index: 1000;
}

.modal-backdrop.active {
  display: flex;
}

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  max-width: 480px;
  width: 100%;
  padding: 1.5rem;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.modal-title {
  font-size: 1rem;
  font-weight: 700;
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.25rem;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: #181b24;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.825rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 1.25rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.75rem;
}

.footer a {
  color: var(--text-secondary);
  text-decoration: none;
}