:root {
  --bg: #1a1d23;
  --bg-card: #22262e;
  --bg-input: #2a2f38;
  --border: #3a404c;
  --text: #e6e9ef;
  --muted: #9098a8;
  --accent: #7eb8da;
  --accent-hover: #9ccce8;
  --danger: #e07a7a;
  --success: #8bc78b;
  --warn: #e0c07a;
  --radius: 10px;
  --touch: 44px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-tap-highlight-color: transparent;
}

.screen {
  min-height: 100vh;
  padding: 0 0 2rem;
}
.screen.hidden { display: none !important; }

#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
#login-screen.hidden { display: none !important; }

.login-card {
  width: 100%;
  max-width: 360px;
}
.login-card h1 { margin-top: 0; }
.login-card .muted { color: var(--muted); margin-bottom: 1.5rem; }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

input, button {
  font: inherit;
  color: inherit;
}
input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 1rem;
  margin-top: 0.25rem;
}
input:focus {
  outline: none;
  border-color: var(--accent);
}
label { display: block; margin-top: 0.5rem; color: var(--muted); font-size: 0.9rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch);
  padding: 0 1.25rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  background: var(--bg-input);
  color: var(--text);
}
.btn:active { opacity: 0.9; }
.btn-primary {
  background: var(--accent);
  color: var(--bg);
  width: 100%;
  margin-top: 0.5rem;
}
.btn-primary:hover, .btn-primary:focus { background: var(--accent-hover); }
.btn-ghost { background: transparent; }
.btn-ghost:hover { background: var(--bg-input); }
#btn-settings { font-size: 2em; line-height: 1; padding: 0 0.5rem; }
.btn-danger { background: var(--danger); color: var(--bg); }
.btn-small { min-height: 36px; padding: 0 0.75rem; font-size: 0.9rem; }

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1rem 0.5rem;
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header h1 { margin: 0; font-size: 1.35rem; }
.header-actions { display: flex; gap: 0.5rem; }

.tabs {
  display: flex;
  gap: 0;
  padding: 0 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.tab {
  padding: 0.75rem 1.25rem;
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

.content { padding: 1rem; }
.panel { display: none; }
.panel.active { display: block; }

.toolbar { margin-bottom: 1rem; }
.toolbar .btn { width: 100%; }

.backup-list-loading {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 0;
  font-size: 0.95rem;
}
.backup-list-loading .spinner { flex-shrink: 0; }

.list { list-style: none; margin: 0; padding: 0; }
.list li {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 0.75rem;
}
.list li h3 { margin: 0 0 0.25rem; font-size: 1.1rem; display: flex; align-items: center; flex-wrap: wrap; }
.list li .meta { color: var(--muted); font-size: 0.85rem; }
.list li .actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
}
.interval-select {
  padding: 0.5rem 0.75rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: inherit;
  font-size: 0.9rem;
  min-height: 36px;
}

.explore-toolbar { margin-bottom: 1rem; }
.explore-toolbar label { display: block; margin-bottom: 0.25rem; color: var(--muted); font-size: 0.9rem; }
.explore-toolbar select {
  width: 100%;
  max-width: 320px;
  padding: 0.6rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: inherit;
  font-size: 1rem;
}
.breadcrumb {
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.breadcrumb a { color: var(--accent); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { color: var(--muted); }
.hidden { display: none !important; }
.explore-error { color: var(--danger); margin-bottom: 0.75rem; }
.explore-list { list-style: none; margin: 0; padding: 0; }
.explore-list li {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}
.explore-list li:hover { background: var(--bg-input); }
.explore-list li.explore-dir { cursor: pointer; }
.explore-list .explore-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.explore-list .explore-type { width: 3rem; color: var(--muted); font-size: 0.8rem; }
.explore-list .explore-size { width: 5rem; color: var(--muted); font-size: 0.85rem; text-align: right; }
.explore-list .explore-mtime { width: 10rem; color: var(--muted); font-size: 0.85rem; }
.explore-list li .icon { margin-right: 0.35rem; }

.schedule-checks { margin: 0.5rem 0 1rem; }
.schedule-checks label { margin-right: 1rem; margin-top: 0; display: inline-block; }
.check input { width: auto; margin: 0 0.25rem 0 0; vertical-align: middle; }

.retain-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 0.5rem 0.75rem; margin: 0.5rem 0 0.5rem; }
.retain-row { display: flex; align-items: center; justify-content: space-between; gap: 0.5rem; margin: 0; padding: 0.35rem 0.5rem; background: var(--bg-input); border-radius: 4px; }
.retain-row .retain-label { font-size: 0.9rem; color: var(--fg); }
.retain-row input[type="number"] { width: 5.5rem; margin: 0; padding: 0.25rem 0.9rem 0.25rem 0.9rem; text-align: center; background: #14171c; border-color: #14171c; color: var(--text); color-scheme: dark; }

.billing-section { border-left: 2px solid var(--border); padding: 0.25rem 0 0.25rem 0.85rem; margin: 0.5rem 0 1rem; }
.billing-preview { background: var(--bg-input); padding: 0.6rem 0.8rem; border-radius: 6px; margin-top: 0.75rem; white-space: pre-wrap; font-size: 0.85rem; color: var(--text); }
.billing-preview.error { color: var(--danger); }
.billing-run-row { display: flex; align-items: center; gap: 0.75rem; margin: 0.75rem 0; flex-wrap: wrap; }
.billing-run-row .hint { margin: 0; }
.billing-line { color: var(--muted); }
.billing-line.billing-error { color: var(--danger); }

.billing-summary-header { margin: 0.25rem 0 1rem; }
.billing-summary-title { margin: 0 0 0.25rem; }
.billing-summary-meta { margin: 0.25rem 0; }
.billing-warning { color: var(--warn); }
.billing-client-card { padding: 1rem 1.1rem; }
.billing-client-header { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.5rem; }
.billing-client-header h3 { margin: 0; }
.billing-client-total { font-weight: 600; font-size: 1.05rem; }
.billing-row { display: grid; grid-template-columns: 1fr auto; gap: 0.25rem 1rem; padding: 0.6rem 0; border-top: 1px solid var(--border); }
.billing-row:first-of-type { border-top: none; }
.billing-row-main { grid-column: 1; }
.billing-row-price { grid-column: 2; grid-row: 1 / span 2; align-self: center; font-variant-numeric: tabular-nums; color: var(--accent); font-weight: 600; }
.billing-row .meta { grid-column: 1; }
.billing-error-line { color: var(--danger); grid-column: 1 / -1; }
.badge-disabled { background: var(--bg-input); color: var(--muted); padding: 0.1rem 0.4rem; border-radius: 3px; font-size: 0.75rem; font-weight: 500; }
.badge-override { background: rgba(126, 184, 218, 0.15); color: var(--accent); padding: 0.1rem 0.4rem; border-radius: 3px; font-size: 0.75rem; font-weight: 500; margin-left: 0.35rem; }
.bulk-edit { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 0.85rem 1rem; margin: 0.5rem 0 0.75rem; }
.bulk-edit.hidden { display: none; }
.bulk-section { padding: 0.35rem 0; }
.bulk-section + .bulk-section { border-top: 1px solid var(--border); margin-top: 0.5rem; padding-top: 0.75rem; }
.bulk-label { display: block; margin: 0 0 0.4rem; color: var(--muted); font-size: 0.85rem; }
.bulk-row { display: flex; flex-wrap: wrap; gap: 0.4rem 0.5rem; margin-bottom: 0.6rem; }
.bulk-row .retain-row { flex: 1 1 140px; }
.bulk-rate-row { align-items: center; }
.bulk-rate-row input { width: 10rem; margin: 0; padding: 0.45rem 0.7rem; background: #14171c; border-color: #14171c; color-scheme: dark; }
.btn-toggle-bulk { margin-left: 0.5rem; }

.config-backup-row { display: flex; gap: 0.6rem; flex-wrap: wrap; margin: 0.25rem 0 1rem; }
.config-backup-row .btn { flex: 1 1 auto; }
.config-import-btn { cursor: pointer; }

.icon-settings-row { display: flex; align-items: center; gap: 1rem; margin: 0.5rem 0 0.25rem; flex-wrap: wrap; }
.icon-preview { width: 64px; height: 64px; object-fit: contain; background: #000; border-radius: 12px; border: 1px solid var(--border); }
.icon-settings-actions { display: flex; gap: 0.5rem; flex: 1 1 auto; flex-wrap: wrap; }
.icon-settings-actions .btn { cursor: pointer; }

.form-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.form-actions .btn { flex: 1; }

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 0;
}
.modal.hidden { display: none; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.6);
}
.modal-content {
  position: relative;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  margin: 0;
  border-radius: var(--radius) var(--radius) 0 0;
}
.modal-content h2 { margin-top: 0; }
.modal-content h3 { margin: 1.25rem 0 0.5rem; font-size: 0.95rem; color: var(--muted); }
.modal-content .hint { margin: 0.35rem 0 0; font-size: 0.85rem; color: var(--muted); }
.modal-content .hint code { font-size: 0.8rem; background: var(--bg); padding: 0.1rem 0.35rem; border-radius: 3px; }

.log-modal-content { padding: 0; }
.log-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1rem 0.5rem;
  border-bottom: 1px solid var(--border);
}
.log-header h2 { margin: 0; font-size: 1rem; }
#log-output {
  margin: 0;
  padding: 1rem;
  background: #0d0e11;
  font-size: 0.8rem;
  line-height: 1.4;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 60vh;
  overflow: auto;
}
#log-output .stderr { color: var(--danger); }

#overall-log-output {
  margin: 0;
  padding: 1rem;
  background: #0d0e11;
  font-size: 0.8rem;
  line-height: 1.4;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 60vh;
  overflow: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.job-item { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.5rem; }
.job-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.job-item .status, .status-pill {
  font-size: 0.85rem;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
}
.status-pill.status-running {
  background: #2a4a3a;
  color: var(--success);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.job-item .status.running { background: #2a4a3a; color: var(--success); }
.job-item .status.queued { background: #3a3a4a; color: var(--accent); }
.job-item .status.completed { background: #2a4a3a; color: var(--success); }
.job-item .status.failed, .job-item .status.stopped { background: #4a2a2a; color: var(--danger); }
.job-item .job-error { color: var(--danger); margin-top: 0.25rem; }
.job-item .job-speed { color: var(--accent); margin-top: 0.2rem; font-size: 0.85rem; }

.spinner {
  display: inline-block;
  width: 0.9em;
  height: 0.9em;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.badge { font-size: 0.75rem; padding: 0.15rem 0.5rem; border-radius: 6px; font-weight: 500; }
.badge-running { background: #2a4a3a; color: var(--success); margin-left: 0.35rem; }
.backup-speed-line { margin-top: 0.2rem; }
.backup-speed, .job-speed .speed-value { color: var(--accent); font-weight: 500; }

.disk-summary { margin-bottom: 1rem; }
.disk-meta { color: var(--muted); font-size: 0.9rem; margin: 0.25rem 0; }
.disk-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin: 0.75rem 0;
}
.disk-stat { display: flex; flex-direction: column; gap: 0.15rem; }
.disk-stat-label { color: var(--muted); font-size: 0.85rem; }
.disk-low-warning {
  color: var(--warn);
  font-weight: 500;
  margin: 0.75rem 0 0;
  padding: 0.5rem;
  background: rgba(224, 192, 122, 0.1);
  border-radius: 8px;
}
.disk-toolbar { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.disk-usage-heading { color: var(--muted); font-size: 0.9rem; margin: 0 0 0.75rem; }
.disk-usage-list .disk-usage-item { margin-bottom: 0.5rem; }
.disk-usage-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: default;
}
.disk-usage-row input.disk-usage-check { width: auto; margin: 0; cursor: pointer; }
.disk-usage-check-spacer { display: inline-block; width: 1.25rem; }
.disk-usage-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.disk-usage-size { color: var(--muted); font-size: 0.9rem; white-space: nowrap; }
.disk-usage-actions { margin-top: 1rem; }

.validation-meta { margin-top: 0.35rem; }
.validation-line { display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem 0.75rem; }
.validation-ok { color: var(--success); font-weight: 500; }
.validation-mismatch { color: var(--warn); font-weight: 500; }
.validation-error { color: var(--danger); }
.validation-none { color: var(--muted); }
.validation-pending { color: var(--muted); font-style: italic; }
.validation-at { color: var(--muted); font-size: 0.85rem; }
.validation-warning { color: var(--warn); font-size: 0.85rem; margin-top: 0.25rem; }
.job-validation { margin-top: 0.2rem; }

@media (min-width: 600px) {
  .modal { align-items: center; padding: 2rem; }
  .modal-content { border-radius: var(--radius); max-height: 85vh; }
  .toolbar .btn { width: auto; }
}