:root {
  --color-bg: #f4f7fa;
  --color-surface: #ffffff;
  --color-text: #17202a;
  --color-muted: #475467;
  --color-border: #d7e0e8;
  --color-border-strong: #b8c5d1;
  --color-primary: #145da0;
  --color-primary-dark: #0f477c;
  --color-success: #087443;
  --color-warning: #b54708;
  --color-error: #b42318;
  --color-info-bg: #e8f1fb;
  --color-warning-bg: #fff7ed;
  --color-error-bg: #fff1f0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --radius-control: 6px;
  --radius-card: 10px;
  --shadow-card: 0 1px 3px rgba(23, 32, 42, .08);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

*, *::before { box-sizing: border-box; }
html { background: var(--color-bg); scroll-behavior: smooth; }
body { margin: 0; background: var(--color-bg); color: var(--color-text); font-size: 16px; line-height: 1.5; }
a { color: var(--color-primary); text-underline-offset: 3px; overflow-wrap: anywhere; }
a:hover { color: var(--color-primary-dark); }
.skip-link { position: absolute; top: -48px; left: 12px; z-index: 100; padding: 10px 14px; background: var(--color-text); color: white; border-radius: var(--radius-control); }
.skip-link:focus { top: 12px; }
.app-shell { width: min(100% - 32px, 1180px); margin: 0 auto; }
.app-header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-5); padding: 22px 0 18px; border-bottom: 1px solid var(--color-border); }
.brand { color: var(--color-text); text-decoration: none; font-size: 20px; font-weight: 750; letter-spacing: -.01em; white-space: nowrap; }
.primary-nav { display: flex; align-items: center; flex-wrap: wrap; justify-content: flex-end; gap: var(--space-1); }
.nav-link, .nav-action { min-height: 44px; display: inline-flex; align-items: center; padding: 8px 12px; border-radius: var(--radius-control); font-weight: 600; text-decoration: none; }
.nav-link { color: var(--color-muted); }
.nav-link:hover { background: var(--color-info-bg); color: var(--color-primary-dark); }
.nav-link.active { background: var(--color-info-bg); color: var(--color-primary-dark); box-shadow: inset 0 -2px 0 var(--color-primary); }
.nav-action { margin: 0; padding: 0; }
.app-main { padding: 30px 0 64px; }
h1, h2, h3 { line-height: 1.25; letter-spacing: -.01em; }
h1 { margin: 0 0 6px; font-size: clamp(26px, 3vw, 34px); }
h2 { margin: 0 0 10px; font-size: 22px; }
h3 { margin: 0 0 6px; font-size: 18px; }
p { margin: 0 0 var(--space-4); }
.eyebrow { margin: 0 0 8px; color: var(--color-primary); font-size: 13px; font-weight: 750; letter-spacing: .05em; text-transform: uppercase; }
.muted, .hint { color: var(--color-muted); }
.small { font-size: 13px; }
.button, button { min-height: 44px; border: 1px solid transparent; border-radius: var(--radius-control); padding: 10px 15px; background: var(--color-primary); color: #fff; cursor: pointer; font: inherit; font-weight: 650; line-height: 1.2; touch-action: manipulation; transition: background-color .18s ease, border-color .18s ease, color .18s ease, box-shadow .18s ease, opacity .18s ease; }
.button:hover, button:hover { background: var(--color-primary-dark); }
.button:active, button:active { transform: translateY(1px); }
.button:disabled, button:disabled { cursor: not-allowed; opacity: .55; }
.button-ghost, .ghost { background: var(--color-surface); border-color: var(--color-border-strong); color: var(--color-text); }
.button-ghost:hover, .ghost:hover { background: #eef4f9; border-color: var(--color-primary); color: var(--color-primary-dark); }
.button-danger, .link-danger { background: transparent; border-color: transparent; color: var(--color-error); }
.button-danger:hover, .link-danger:hover { background: var(--color-error-bg); color: #8d1d16; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 3px solid #f59e0b; outline-offset: 2px; }
input, select, textarea { width: 100%; min-height: 44px; margin-top: 6px; border: 1px solid var(--color-border-strong); border-radius: var(--radius-control); padding: 10px 12px; background: var(--color-surface); color: var(--color-text); font: inherit; }
textarea { min-height: 96px; resize: vertical; }
input[type="checkbox"] { width: 20px; min-height: 20px; margin: 0 8px 0 0; vertical-align: middle; accent-color: var(--color-primary); }
label { display: block; color: var(--color-text); font-weight: 650; }
label .hint, label small { display: block; margin-top: 5px; font-weight: 400; }
.app-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4); }
.full { grid-column: 1 / -1; }
.stack { display: grid; gap: var(--space-4); }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-2); margin: var(--space-5) 0; }
.card { border: 1px solid var(--color-border); border-radius: var(--radius-card); padding: var(--space-5); background: var(--color-surface); box-shadow: var(--shadow-card); }
.card + .card { margin-top: var(--space-4); }
.card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--space-4); margin-bottom: var(--space-4); }
.card-header p { margin-bottom: 0; }
.alert { margin: 0 0 var(--space-5); border-left: 4px solid var(--color-success); border-radius: 0 var(--radius-control) var(--radius-control) 0; padding: 12px 16px; background: #e9f7ef; }
.alert.error { border-color: var(--color-error); background: var(--color-error-bg); }
.alert.warning { border-color: var(--color-warning); background: var(--color-warning-bg); }
.run-banner { display: flex; align-items: center; gap: 12px; margin: 0 0 var(--space-5); border: 1px solid #f2c38e; border-radius: var(--radius-card); padding: 14px 16px; background: var(--color-warning-bg); }
.spinner { width: 18px; height: 18px; flex: 0 0 18px; border: 2px solid #f2c38e; border-top-color: var(--color-warning); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-3); margin: var(--space-5) 0; }
.stat { border: 1px solid var(--color-border); border-radius: var(--radius-card); padding: 16px; background: var(--color-surface); }
.stat strong { display: block; font-size: 28px; line-height: 1.1; }
.stat span { color: var(--color-muted); font-size: 14px; }
.source-group { margin-top: var(--space-6); }
.source-group-title { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-3); }
.source-card { margin-top: var(--space-3); }
.source-card-main { display: flex; justify-content: space-between; gap: var(--space-5); }
.domain { color: var(--color-primary); font-size: 14px; }
.status { display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 4px 10px; font-size: 13px; font-weight: 700; }
.status.on, .status.success { background: #e7f5ed; color: var(--color-success); }
.status.off { background: #fff4e5; color: var(--color-warning); }
.status.error { background: var(--color-error-bg); color: var(--color-error); }
.source-meta { min-width: 205px; text-align: right; }
.source-meta small { display: block; margin-top: 6px; color: var(--color-muted); }
.source-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); padding-top: var(--space-3); border-top: 1px solid #e8edf2; }
.section-list { margin: var(--space-4) 0 0; padding: 0; list-style: none; }
.section-list li { display: flex; justify-content: space-between; gap: var(--space-4); padding: 14px 0; border-top: 1px solid #e8edf2; }
.section-actions { display: flex; align-items: flex-start; flex-wrap: wrap; gap: var(--space-2); }
details { border-radius: var(--radius-control); }
summary { min-height: 44px; display: inline-flex; align-items: center; cursor: pointer; color: var(--color-primary); font-weight: 700; }
.empty { margin: 0; border: 1px dashed var(--color-border-strong); border-radius: var(--radius-control); padding: 18px; color: var(--color-muted); background: #fbfcfd; }
.table-wrap { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 13px 10px; border-bottom: 1px solid #e8edf2; text-align: left; vertical-align: top; }
th { color: var(--color-muted); font-size: 13px; font-weight: 750; }
.chart-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4); }
.bar-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.bar-row { display: grid; grid-template-columns: minmax(110px, 1fr) 2fr auto; gap: 10px; align-items: center; }
.bar-track { height: 12px; overflow: hidden; border-radius: 999px; background: #e6edf4; }
.bar-fill { height: 100%; border-radius: inherit; background: var(--color-primary); }
.chart-caption { margin-top: 12px; color: var(--color-muted); font-size: 13px; }
.inline-form { display: inline-flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.danger-text { color: var(--color-error); }
.system-info { margin-top: var(--space-6); border-top: 1px solid var(--color-border); padding-top: var(--space-3); color: var(--color-muted); font-size: 13px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.auth-card { width: min(100%, 460px); margin: 8vh auto 0; }
.admin-list { display: grid; gap: var(--space-3); }
.admin-card { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-4); align-items: center; }
.admin-card .admin-meta { display: grid; gap: 3px; }
.admin-card .admin-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-2); justify-content: flex-end; }
.admin-card form { margin: 0; }
.form-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-2); }
.manual-form { margin-top: var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-card); padding: var(--space-4); background: #fbfcfd; }
.manual-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1.2fr) minmax(0, 1fr); gap: var(--space-3); margin: var(--space-3) 0; }
@media (max-width: 900px) {
  .app-header { align-items: flex-start; flex-direction: column; }
  .primary-nav { justify-content: flex-start; width: 100%; }
  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
  .app-shell { width: min(100% - 24px, 1180px); }
  .app-main { padding-top: 22px; }
  .app-grid, .chart-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .stat { padding: 12px; }
  .stat strong { font-size: 23px; }
  .source-card-main, .section-list li { display: block; }
  .source-meta { min-width: 0; margin-top: 12px; text-align: left; }
  .section-actions { margin-top: 12px; }
  .actions > *, .actions form, .actions .button, .actions button { width: 100%; }
  .actions a { text-align: center; }
  .bar-row { grid-template-columns: minmax(90px, 1fr) 1.2fr auto; font-size: 14px; }
  .admin-card { grid-template-columns: 1fr; align-items: start; }
  .admin-card .admin-actions { justify-content: flex-start; }
  th, td { padding: 11px 8px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}