:root {
  --bg: #0f0f12;
  --bg-elevated: #18181d;
  --bg-hover: #222228;
  --border: #2a2a32;
  --text: #e8e8ed;
  --text-muted: #8b8b96;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --radius: 10px;
  --font: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.hidden { display: none !important; }

/* Login */
#login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.login-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  width: 100%;
  max-width: 360px;
}

.login-card h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.tagline {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.75rem;
}

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

.login-card input {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

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

.login-card button {
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.login-card button:hover {
  background: var(--accent-hover);
}

.error {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 0.75rem;
  min-height: 1.2em;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  cursor: pointer;
}

.modal-content {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  width: 100%;
  max-width: 360px;
}

.modal-content h3 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

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

.modal-content input {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

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

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

.modal-actions button {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font: inherit;
  cursor: pointer;
}

.modal-actions button[type="submit"] {
  background: var(--accent);
  color: white;
  border: none;
}

.modal-actions button[type="submit"]:hover {
  background: var(--accent-hover);
}

.modal-actions button[type="button"] {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.modal-actions button[type="button"]:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

.modal-content .error {
  margin-top: 0.5rem;
}

/* Main layout */
#main-screen header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 1.5rem;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

#main-screen header h1 {
  font-size: 1.25rem;
  font-weight: 700;
}

#main-screen nav {
  display: flex;
  gap: 0.25rem;
}

#main-screen nav button {
  padding: 0.5rem 1rem;
  background: transparent;
  color: var(--text-muted);
  border: none;
  border-radius: 8px;
  font: inherit;
  cursor: pointer;
}

#main-screen nav button:hover,
#main-screen nav button.active {
  color: var(--text);
  background: var(--bg-hover);
}

.user-bar {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-bar span {
  color: var(--text-muted);
  font-size: 0.9rem;
}

#password-btn,
#logout-btn {
  padding: 0.4rem 0.8rem;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

#password-btn:hover,
#logout-btn:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

main {
  padding: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.tab-panel {
  display: none;
}

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

.panel-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.panel-header h2 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-muted);
}

.add-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.add-form input[type="text"] {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  min-width: 140px;
}

.add-form input[type="file"] {
  padding: 0.5rem;
  font-size: 0.9rem;
}

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

.add-form button,
.add-form button[type="submit"] {
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  font: inherit;
  font-weight: 500;
  cursor: pointer;
}

.add-form button:hover {
  background: var(--accent-hover);
}

.add-form button.secondary {
  background: var(--bg-hover);
  color: var(--text);
}

.add-form button.secondary:hover {
  background: var(--border);
}

/* Datastore */
.store-view {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  overflow-x: auto;
}

.store-view pre {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Monitor */
.monitor-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.monitor-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.monitor-item .status {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.monitor-item .status.up { background: var(--success); }
.monitor-item .status.down { background: var(--danger); }
.monitor-item .status.unknown { background: var(--text-muted); }

.monitor-item .info {
  flex: 1;
  min-width: 0;
}

.monitor-item .name {
  font-weight: 500;
}

.monitor-item .url {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.monitor-item .meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.monitor-item button {
  padding: 0.4rem 0.75rem;
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
  border-radius: 6px;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

.monitor-item button:hover {
  background: rgba(239, 68, 68, 0.15);
}

.monitor-empty {
  color: var(--text-muted);
  padding: 2rem;
  text-align: center;
}

/* Stats */
.stats-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.stat-card .stat-name {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.stat-card .stat-url {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.stat-card .stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 1rem;
}

.stat-card .stat-item {
  padding: 0.5rem;
  background: var(--bg);
  border-radius: 6px;
}

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

.stat-card .stat-item .value {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
}

.stat-card .stat-item .value.up { color: var(--success); }
.stat-card .stat-item .value.down { color: var(--danger); }

.stats-empty {
  color: var(--text-muted);
  padding: 2rem;
  text-align: center;
}

.add-form select {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

/* Files */
.files-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.file-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.file-item .name {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-item .size {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.file-item a,
.file-item button {
  padding: 0.35rem 0.65rem;
  font-size: 0.85rem;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  font: inherit;
}

.file-item a {
  background: var(--accent);
  color: white;
  border: none;
}

.file-item a:hover {
  background: var(--accent-hover);
}

.file-item button {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
}

.file-item button:hover {
  background: rgba(239, 68, 68, 0.15);
}

.files-empty {
  color: var(--text-muted);
  padding: 2rem;
  text-align: center;
}