/* Design tokens */
:root {
  --bg: #1a1a2e;
  --surface: #16213e;
  --border: #0f3460;
  --accent: #e94560;
  --accent2: #0f3460;
  --text: #eee;
  --muted: #aaa;
  --success: #4ecca3;
  --error: #e94560;
  --warning: #f5a623;
}

/* Reset & base */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
header {
  background: var(--surface);
  border-bottom: 2px solid var(--border);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}
header h1 { font-size: 18px; font-weight: 600; }
header .badge {
  background: var(--success);
  color: #111;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}
header .nav-group { display: flex; gap: 4px; margin-left: 16px; }

/* Content */
.content { padding: 24px; max-width: 1400px; margin: 0 auto; }

/* Buttons */
.btn {
  padding: 8px 20px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
  font-weight: 600;
  transition: opacity 0.2s;
}
.btn:hover { opacity: 0.85; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-secondary { background: var(--accent2); color: #fff; }
.btn-success { background: var(--success); color: #111; }
.btn-danger { background: var(--error); color: #fff; }
.btn-sm { padding: 4px 12px; font-size: 12px; }
.btn-back {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 6px 16px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  margin-bottom: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-back:hover { color: var(--text); border-color: var(--accent); }

/* Forms */
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; margin-top: 12px; }
label:first-child { margin-top: 0; }
input[type="text"], input[type="password"], input[type="number"], select {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  font-size: 14px;
  font-family: 'Consolas', 'Courier New', monospace;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; color: var(--muted); padding: 10px 12px; border-bottom: 1px solid var(--border); }
td { padding: 10px 12px; border-bottom: 1px solid rgba(15,52,96,0.4); font-family: 'Consolas', monospace; }
tr:hover td { background: rgba(15,52,96,0.2); }
tr.clickable { cursor: pointer; }

/* Login overlay */
.login-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}
.login-overlay.hidden { display: none; }
.login-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 36px 32px;
  width: 360px;
  text-align: center;
}
.login-box h2 { font-size: 20px; margin-bottom: 4px; }
.login-box .subtitle { color: var(--muted); font-size: 13px; margin-bottom: 24px; }
.login-box input { margin-bottom: 12px; }
.login-box .btn { width: 100%; margin-top: 4px; }
.login-error { color: var(--error); font-size: 13px; min-height: 18px; margin-bottom: 8px; }
.app-wrap { display: none; }
.app-wrap.visible { display: block; }
.logout-btn {
  margin-left: auto;
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 4px 14px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
}
.logout-btn:hover { color: var(--text); border-color: var(--accent); }

/* Nav links */
.nav-link {
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
  padding: 4px 12px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: none;
  transition: all 0.2s;
}
.nav-link:hover { color: var(--text); border-color: var(--border); }
.nav-link.active { color: var(--text); border-color: var(--accent); }

/* Dashboard cards */
.dash-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 20px;
  margin-top: 16px;
}
.dash-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s;
}
.dash-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.dash-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.dash-card-icon {
  width: 48px; height: 48px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; flex-shrink: 0;
}
.dash-card-icon.weather { background: rgba(78,204,163,0.15); color: var(--success); }
.dash-card-icon.rsu { background: rgba(15,52,96,0.4); color: #5dade2; }
.dash-card-icon.signs { background: rgba(233,69,96,0.15); color: var(--accent); }
.dash-card h3 { font-size: 16px; font-weight: 600; }
.dash-card p { color: var(--muted); font-size: 13px; margin-top: 4px; }
.dash-card-stats {
  display: flex; gap: 24px; margin-top: 16px;
  padding-top: 16px; border-top: 1px solid var(--border);
}
.stat { text-align: center; }
.stat-value { font-size: 22px; font-weight: 700; font-family: 'Consolas', monospace; }
.stat-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; }
.status-dot {
  display: inline-block; width: 8px; height: 8px;
  border-radius: 50%; margin-right: 6px;
}
.status-dot.online { background: var(--success); }
.status-dot.offline { background: var(--error); }
.status-dot.running { background: var(--success); }
.status-dot.pending { background: var(--muted); }
.status-dot.failed { background: var(--error); }
.status-dot.terminated { background: var(--muted); }

/* Page titles */
.page-title { font-size: 20px; font-weight: 600; margin-bottom: 4px; }
.page-subtitle { color: var(--muted); font-size: 13px; margin-bottom: 20px; }

/* Detail view */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px; margin-top: 16px;
}
.detail-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px; padding: 16px;
}
.detail-card h4 {
  font-size: 12px; color: var(--muted); text-transform: uppercase;
  letter-spacing: 1px; margin-bottom: 12px; padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.kv-row { display: flex; justify-content: space-between; padding: 4px 0; font-size: 13px; }
.kv-key { color: var(--muted); }
.kv-val { font-family: 'Consolas', monospace; font-weight: 600; }

/* Override form */
.override-section {
  margin-top: 20px; padding: 16px;
  background: rgba(15,52,96,0.2); border-radius: 6px; border: 1px solid var(--border);
}
.override-section h4 {
  font-size: 13px; color: var(--muted); text-transform: uppercase;
  letter-spacing: 1px; margin-bottom: 12px;
}
.override-form { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.override-form .form-group { flex: 1; min-width: 140px; }
.override-form label { margin-top: 0; }

/* Toast */
.toast {
  position: fixed; bottom: 24px; right: 24px;
  padding: 12px 20px; border-radius: 6px;
  font-size: 14px; font-weight: 600;
  opacity: 0; transform: translateY(20px);
  transition: all 0.3s; z-index: 100;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.success { background: var(--success); color: #111; }
.toast.error { background: var(--error); color: #fff; }

.loading { text-align: center; padding: 60px; color: var(--muted); font-size: 14px; }
.empty-state { text-align: center; padding: 40px; color: var(--muted); }

/* Instance management styles */
.type-card {
  display: inline-flex; flex-direction: column; align-items: center;
  padding: 16px 24px; border: 2px solid var(--border); border-radius: 8px;
  cursor: pointer; transition: border-color 0.2s, background 0.2s;
  min-width: 140px; text-align: center;
}
.type-card:hover { border-color: var(--accent); }
.type-card.selected { border-color: var(--accent); background: rgba(233, 69, 96, 0.08); }

.filter-bar { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; align-items: center; }
.filter-pill {
  padding: 6px 16px; border: 1px solid var(--border); border-radius: 20px;
  font-size: 13px; cursor: pointer; transition: all 0.2s;
  background: transparent; color: var(--muted);
}
.filter-pill:hover { border-color: var(--accent); color: var(--text); }
.filter-pill.active { border-color: var(--accent); background: rgba(233, 69, 96, 0.12); color: var(--text); }

.status-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 10px; border-radius: 12px; font-size: 12px; font-weight: 600;
}
.status-badge.running { background: rgba(78,204,163,0.15); color: var(--success); }
.status-badge.deploying { background: rgba(245,166,35,0.15); color: var(--warning); }
.status-badge.pending { background: rgba(170,170,170,0.15); color: var(--muted); }
.status-badge.failed { background: rgba(233,69,96,0.15); color: var(--error); }
.status-badge.terminating { background: rgba(245,166,35,0.15); color: var(--warning); }
.status-badge.terminated { background: rgba(170,170,170,0.15); color: var(--muted); }

@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.status-dot.deploying, .status-dot.terminating {
  background: var(--warning);
  animation: pulse 1.5s ease-in-out infinite;
}

.log-viewer {
  background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
  padding: 12px 16px; font-family: 'Consolas', 'Courier New', monospace;
  font-size: 12px; line-height: 1.5; max-height: 400px;
  overflow-y: auto; white-space: pre-wrap; word-break: break-all; color: var(--muted);
}

.toggle-group { display: flex; gap: 16px; margin-top: 8px; }
.toggle-item { display: flex; align-items: center; gap: 6px; cursor: pointer; font-size: 14px; }
.toggle-item input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent); }

.form-columns { display: grid; grid-template-columns: 1fr 360px; gap: 24px; margin-top: 16px; }
@media (max-width: 800px) { .form-columns { grid-template-columns: 1fr; } }

.preview-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 16px; position: sticky; top: 24px;
}
.preview-card h4 {
  font-size: 12px; color: var(--muted); text-transform: uppercase;
  letter-spacing: 1px; margin-bottom: 12px;
}

.modal-overlay {
  position: fixed; inset: 0; background: rgba(0, 0, 0, 0.6);
  display: flex; align-items: center; justify-content: center; z-index: 150;
}
.modal-box {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 24px; width: 400px; max-width: 90vw;
}
.modal-box h3 { margin-bottom: 12px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }

.instance-summary {
  display: flex; gap: 16px; padding: 16px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; margin-bottom: 20px; align-items: center; flex-wrap: wrap;
}
.instance-summary .stat-value { font-size: 18px; }

.actions-dropdown { position: relative; display: inline-block; }
.actions-btn {
  background: none; border: 1px solid var(--border); color: var(--muted);
  padding: 4px 10px; border-radius: 4px; cursor: pointer; font-size: 13px;
}
.actions-btn:hover { color: var(--text); border-color: var(--accent); }
.actions-menu {
  position: absolute; right: 0; top: 100%;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 6px; min-width: 160px; z-index: 50;
  display: none; box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.actions-menu.show { display: block; }
.actions-menu-item {
  display: block; width: 100%; padding: 8px 14px; font-size: 13px;
  color: var(--text); background: none; border: none; cursor: pointer; text-align: left;
}
.actions-menu-item:hover { background: rgba(15,52,96,0.3); }
.actions-menu-item.danger { color: var(--error); }