/* Work Hours & Overtime Calculator — self-contained */

:root {
  color-scheme: light;
  --bg: #eef1f6;
  --surface: #ffffff;
  --text: #121826;
  --muted: #5c6478;
  --border: #d8dde8;
  --shadow: 0 10px 36px rgba(18, 24, 38, 0.08);
  --radius: 14px;
  --radius-sm: 10px;
  --accent: #1a56a8;
  --accent-soft: #e8f0fb;
  --accent-strong: #0f3d7a;
  --danger: #b42318;
  --danger-soft: #fdecea;
  --ok: #0d6b4d;
  --focus: #2563eb;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, Cantarell, "Noto Sans", Arial, sans-serif;
  --max: 1100px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
  width: auto;
  height: auto;
  padding: 10px 14px;
  background: var(--surface);
  border-radius: var(--radius-sm);
  z-index: 1000;
  outline: 2px solid var(--focus);
}

.wrap {
  width: min(100% - 24px, var(--max));
  margin-inline: auto;
}

.site-header {
  padding: 28px 0 12px;
}

.site-header h1 {
  margin: 0 0 12px;
  font-size: clamp(1.45rem, 4vw, 1.9rem);
  letter-spacing: -0.02em;
}

.lead {
  margin: 0;
  max-width: 68ch;
  color: var(--muted);
  font-size: 1.03rem;
}

.layout {
  display: grid;
  gap: 18px;
  padding-bottom: 8px;
}

@media (min-width: 900px) {
  .layout {
    grid-template-columns: 1fr 240px;
    align-items: start;
  }
}

.layout-primary {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.layout-side {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.card-title {
  margin: 0 0 14px;
  font-size: 1.08rem;
}

.field-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

@media (min-width: 520px) {
  .field-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .field-span-2 {
    grid-column: span 2;
  }
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--muted);
}

.input {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font: inherit;
  color: var(--text);
  background: #fff;
  min-height: 48px;
}

.input:focus {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

.textarea {
  min-height: 72px;
  resize: vertical;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 16px;
  border-radius: var(--radius-sm);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  border: none;
  min-height: 48px;
}

.btn:focus {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.btn-secondary {
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(26, 86, 168, 0.25);
}

.btn-danger {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid rgba(180, 35, 24, 0.25);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn-stack .btn {
  width: 100%;
}

.action-status {
  margin: 12px 0 0;
  font-size: 0.9rem;
  color: var(--ok);
}

.warnings-panel {
  font-size: 0.95rem;
  min-height: 1.5em;
}

.warnings-panel ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--danger);
}

.warnings-panel .warnings-ok {
  margin: 0;
  color: var(--ok);
}

.formula-list {
  margin: 0;
  padding-left: 1.2rem;
}

.formula-list li {
  margin-bottom: 8px;
}

.results-wrap {
  padding-bottom: 20px;
}

.section-heading {
  margin: 0 0 14px;
  font-size: 1.05rem;
}

.kpi-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

@media (min-width: 560px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .kpi-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.kpi-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  box-shadow: 0 4px 16px rgba(18, 24, 38, 0.05);
}

.kpi-card-accent {
  border-color: var(--accent);
  background: linear-gradient(135deg, #fff 0%, var(--accent-soft) 100%);
}

.kpi-label {
  margin: 0 0 6px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  font-weight: 700;
}

.kpi-value {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--accent-strong);
}

.kpi-card-accent .kpi-value {
  font-size: 1.5rem;
}

.split-bar-wrap {
  margin-top: 18px;
  max-width: 560px;
}

.split-bar-label {
  margin: 0 0 8px;
  font-size: 0.88rem;
  color: var(--muted);
  font-weight: 600;
}

.split-bar {
  display: flex;
  height: 12px;
  border-radius: 999px;
  overflow: hidden;
  background: #e4e9f2;
  border: 1px solid var(--border);
}

.split-bar-reg {
  background: var(--accent);
  min-width: 0;
  transition: width 0.2s ease;
}

.split-bar-ot {
  background: #94a3b8;
  min-width: 0;
  transition: width 0.2s ease;
}

.prose {
  padding-bottom: 48px;
}

.prose .card {
  margin-bottom: 16px;
}

.prose h2 {
  margin: 0 0 12px;
  font-size: 1.12rem;
}

.prose ol {
  margin: 0;
  padding-left: 1.25rem;
}

.prose li {
  margin-bottom: 8px;
}

.faq-dl dt {
  font-weight: 700;
  margin-top: 12px;
}

.faq-dl dt:first-child {
  margin-top: 0;
}

.faq-dl dd {
  margin: 4px 0 0;
  color: var(--muted);
}

.site-footer {
  padding: 20px 0 40px;
}

.footer-note {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}

.print-area {
  display: none;
}

.export-fallback {
  position: fixed;
  inset: 0;
  background: rgba(18, 24, 38, 0.45);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.export-fallback[hidden] {
  display: none !important;
}

.export-fallback-panel {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px;
  max-width: 520px;
  width: 100%;
  box-shadow: var(--shadow);
}

.export-fallback-title {
  margin: 0 0 8px;
  font-size: 1.12rem;
}

.export-fallback-hint {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.92rem;
}

.export-fallback-textarea {
  width: 100%;
  font-family: ui-monospace, monospace;
  font-size: 0.82rem;
  padding: 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

@media print {
  body {
    background: #fff;
  }

  .no-print,
  .skip-link {
    display: none !important;
  }

  .print-area {
    display: block;
    padding: 12mm 15mm;
  }

  .print-inner h1 {
    margin: 0 0 12px;
    font-size: 1.35rem;
  }

  .print-inner p,
  .print-inner li {
    font-size: 0.95rem;
  }

  .print-inner ul {
    margin: 12px 0 0;
    padding-left: 1.2rem;
  }
}