:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #172033;
  --muted: #657085;
  --line: #dde5f0;
  --primary: #1f5eff;
  --primary-dark: #1747bf;
  --success: #168a53;
  --danger: #b42318;
  --shadow: 0 10px 30px rgba(23, 32, 51, 0.08);
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--primary); text-decoration: none; }
.site-header { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.9rem 1rem; background: rgba(255,255,255,0.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(10px); }
.brand { font-weight: 800; color: var(--text); }
.nav-links { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; justify-content: flex-end; }
.nav-links a, .link-button { color: var(--muted); font-weight: 650; font-size: 0.94rem; }
.inline-form { display: inline; margin: 0; }
.link-button { border: 0; background: transparent; cursor: pointer; padding: 0; }
.page-shell { width: min(1120px, calc(100% - 2rem)); margin: 1.5rem auto 3rem; }
.page-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: 1rem; }
.page-header h1, .auth-card h1 { margin: 0; font-size: clamp(1.65rem, 5vw, 2.4rem); line-height: 1.1; }
.eyebrow { margin: 0 0 0.25rem; color: var(--primary); font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem; }
.muted { color: var(--muted); }
.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; margin-bottom: 1rem; }
.metric-grid.single { grid-template-columns: minmax(0, 1fr); }
.metric-card, .card, .form-card, .auth-card, .empty-card, .progress-card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
.metric-card { padding: 1rem; }
.metric-card span { display: block; color: var(--muted); font-size: 0.88rem; margin-bottom: 0.35rem; }
.metric-card strong { font-size: clamp(1.35rem, 5vw, 2rem); }
.card, .form-card, .auth-card, .empty-card, .progress-card { padding: 1.1rem; margin-bottom: 1rem; }
.auth-card { max-width: 430px; margin: 3rem auto; }
.section-title { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.section-title h2 { margin: 0; }
.progress-label { display: flex; justify-content: space-between; gap: 1rem; margin-bottom: 0.5rem; }
.progress-track { width: 100%; height: 0.9rem; background: #e9eef7; border-radius: 999px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--primary), #22a06b); border-radius: inherit; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 2.6rem; padding: 0.65rem 1rem; border-radius: 12px; border: 1px solid var(--line); font-weight: 800; cursor: pointer; }
.button.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.button.primary:hover { background: var(--primary-dark); }
.button.secondary, .button.compact { background: #fff; color: var(--text); }
.button.compact { min-height: 2rem; padding: 0.35rem 0.65rem; font-size: 0.85rem; }
.responsive-table { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 0.75rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }
.status { display: inline-flex; border-radius: 999px; padding: 0.2rem 0.55rem; background: #eef2f7; color: var(--muted); font-weight: 800; font-size: 0.78rem; }
.status.active { background: #dcfce7; color: var(--success); }
.status.muted-status { background: #eef2f7; color: var(--muted); }
.stacked-form { display: grid; gap: 0.9rem; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.9rem; }
.field { display: grid; gap: 0.35rem; }
.field.wide { grid-column: 1 / -1; }
label { font-weight: 750; }
input, select, textarea { width: 100%; border: 1px solid var(--line); border-radius: 12px; padding: 0.75rem; font: inherit; background: #fff; }
input[type="checkbox"] { width: auto; }
.hour-choice { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.5rem; }
.hour-choice li { border: 1px solid var(--line); border-radius: 12px; padding: 0.6rem; background: #fff; }
.actions { display: flex; gap: 0.65rem; flex-wrap: wrap; }
.messages { display: grid; gap: 0.5rem; margin-bottom: 1rem; }
.message { padding: 0.75rem 1rem; border-radius: 12px; background: #eaf1ff; color: #183b7a; border: 1px solid #c9dcff; }
.message.error, .field-error { color: var(--danger); }
.field-error { font-size: 0.88rem; }
.prewrap { white-space: pre-wrap; overflow-wrap: anywhere; }
@media (max-width: 760px) {
  .site-header, .page-header { flex-direction: column; align-items: stretch; }
  .nav-links { justify-content: flex-start; }
  .metric-grid, .form-grid { grid-template-columns: 1fr; }
  .hour-choice { grid-template-columns: 1fr 1fr; }
  th, td { padding: 0.65rem 0.5rem; }
}