/* ======================================================
   Superior Support — Backup Monitor
   Brand: #080e1c (navy), #2979ff (electric blue)
   ====================================================== */

:root {
  --bg: #080e1c;
  --surface: #0d1526;
  --surface-2: #111d35;
  --border: #1a2a4a;
  --accent: #2979ff;
  --accent-dim: rgba(41, 121, 255, 0.12);
  --accent-glow: rgba(41, 121, 255, 0.25);

  --success: #00e676;
  --success-bg: rgba(0, 230, 118, 0.08);
  --success-border: rgba(0, 230, 118, 0.25);

  --warn: #ffab40;
  --warn-bg: rgba(255, 171, 64, 0.08);
  --warn-border: rgba(255, 171, 64, 0.25);

  --danger: #ff5252;
  --danger-bg: rgba(255, 82, 82, 0.08);
  --danger-border: rgba(255, 82, 82, 0.25);

  --text-primary: #e8edf5;
  --text-secondary: #6b7fa3;
  --text-muted: #3d5175;

  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius: 6px;
  --radius-lg: 10px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ---- Header ---- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 14, 28, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 24px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand { display: flex; align-items: center; gap: 10px; }

.brand-mark {
  width: 30px;
  height: 30px;
  background: var(--accent);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.05em;
  color: #fff;
  flex-shrink: 0;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-size: 13px; font-weight: 600; color: var(--text-primary); }
.brand-sub  { font-size: 10px; color: var(--text-secondary); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.user-info { display: flex; align-items: center; gap: 10px; }
.user-name {
  font-size: 12px;
  color: var(--text-secondary);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 500;
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  transition: opacity 0.15s, background 0.15s;
  white-space: nowrap;
}
.btn:hover { opacity: 0.85; }
.btn:active { opacity: 0.7; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--surface); color: var(--text-primary); opacity: 1; }
.btn-sm  { padding: 4px 8px; font-size: 11px; }
.btn-lg  { padding: 11px 22px; font-size: 14px; }

/* ---- Main layout ---- */
.main {
  max-width: 1600px;
  margin: 0 auto;
  padding: 24px;
}

/* ---- Login screen ---- */
.login-screen {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: calc(100vh - 54px);
  padding: 32px;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 44px 36px;
  text-align: center;
  max-width: 380px;
  width: 100%;
}

.login-icon  { font-size: 36px; margin-bottom: 14px; }
.login-title { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.login-desc  { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 24px; }

/* ---- Summary bar ---- */
.summary-bar {
  display: flex;
  align-items: center;
  gap: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 20px;
  margin-bottom: 20px;
}

.summary-stat { display: flex; flex-direction: column; gap: 1px; }

.stat-value {
  font-size: 22px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--text-primary);
}

.stat-value.success { color: var(--success); }
.stat-value.warn    { color: var(--warn); }
.stat-value.danger  { color: var(--danger); }

.stat-label {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.summary-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.last-refresh { font-size: 11px; color: var(--text-muted); }

/* ---- Client group ---- */
.client-group { margin-bottom: 20px; }

.client-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.client-name {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.client-count {
  font-size: 10px;
  color: var(--text-muted);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 1px 7px;
}

/* ---- Device grid — more columns, tighter gap ---- */
.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 8px;
}

/* ---- Device card — compact ---- */
.device-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  transition: border-color 0.2s;
}

.device-card:hover { border-color: var(--accent); }

/* Status left border strip */
.device-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--text-muted);
  transition: background 0.3s;
}

.device-card.status-success::before { background: var(--success); box-shadow: 0 0 6px var(--success); }
.device-card.status-partial::before { background: var(--warn);    box-shadow: 0 0 6px var(--warn); }
.device-card.status-failed::before  { background: var(--danger);  box-shadow: 0 0 6px var(--danger); }
.device-card.status-overdue::before { background: var(--danger);  box-shadow: 0 0 6px var(--danger); }
.device-card.status-never::before   { background: var(--text-muted); }

/* Compact inner padding */
.device-card-inner { padding: 10px 12px 10px 14px; }

.device-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}

.device-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  font-family: var(--font-mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.status-badge {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 7px;
  border-radius: 20px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.status-badge.success { background: var(--success-bg); color: var(--success); border: 1px solid var(--success-border); }
.status-badge.partial { background: var(--warn-bg);    color: var(--warn);    border: 1px solid var(--warn-border); }
.status-badge.failed  { background: var(--danger-bg);  color: var(--danger);  border: 1px solid var(--danger-border); }
.status-badge.overdue { background: var(--danger-bg);  color: var(--danger);  border: 1px solid var(--danger-border); }
.status-badge.never   { background: var(--surface-2);  color: var(--text-muted); border: 1px solid var(--border); }

.status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

.status-badge.success .status-dot,
.status-badge.failed .status-dot,
.status-badge.overdue .status-dot {
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

/* ---- Compact device footer (single line) ---- */
.device-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 6px;
}

.footer-date { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.footer-check { flex-shrink: 0; color: var(--success); font-weight: 500; }
.footer-cross { flex-shrink: 0; color: var(--danger); }

/* ---- File links ---- */
.file-link {
  display: inline-flex;
  align-items: center;
  font-size: 10px;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  background: var(--accent-dim);
  border: 1px solid var(--accent-glow);
  border-radius: 3px;
  padding: 1px 5px;
  font-family: var(--font-mono);
  flex-shrink: 0;
  transition: background 0.15s;
}
.file-link:hover { background: rgba(41, 121, 255, 0.2); }

/* ---- Loading / Error / Empty ---- */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 60px 0;
  color: var(--text-secondary);
  font-size: 13px;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.error-banner {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  border-radius: var(--radius);
  color: var(--danger);
  padding: 10px 14px;
  font-size: 12px;
  margin-bottom: 16px;
}

.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-secondary);
}
.empty-icon   { font-size: 40px; margin-bottom: 14px; }
.empty-state h2 { font-size: 16px; margin-bottom: 6px; color: var(--text-primary); }
.empty-state p  { font-size: 13px; }

/* ---- Utilities ---- */
.hidden { display: none !important; }

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .main { padding: 16px; }
  .summary-bar { flex-wrap: wrap; gap: 14px; }
  .summary-right { width: 100%; justify-content: flex-end; }
  .device-grid { grid-template-columns: 1fr 1fr; }
  .header-inner { padding: 0 16px; }
}

@media (max-width: 400px) {
  .device-grid { grid-template-columns: 1fr; }
}