:root{
  --bg:#f3f6fb;
  --surface:#ffffff;
  --surface-2:#f8fbff;
  --text:#172033;
  --muted:#60708f;
  --border:#dbe4f0;
  --border-strong:#c3d1e3;
  --primary:#2153c8;
  --primary-2:#1b3f97;
  --success:#177245;
  --warning:#9a6900;
  --danger:#b42318;
  --danger-soft:#fff1f0;
  --warning-soft:#fff8e8;
  --success-soft:#edfdf3;
  --blue-soft:#eef5ff;
  --shadow:0 10px 28px rgba(22,35,73,.08);
  --radius:14px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: "Segoe UI", Arial, sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,#eef3fb 0%,#f6f8fc 160px,var(--bg) 160px);
}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.page-shell{max-width:1660px;margin:0 auto;padding:18px 18px 28px}
.topbar{
  background:linear-gradient(135deg,#1d2f61,#24489a 55%,#2d67dd);
  color:#fff;
  box-shadow:var(--shadow);
}
.topbar-inner{
  max-width:1660px;margin:0 auto;padding:16px 18px 14px;
}
.brand-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.brand-title{font-size:24px;font-weight:700;letter-spacing:.2px}
.brand-subtitle{font-size:13px;opacity:.86;margin-top:4px}
.navbar{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.navbar a{
  color:#e8efff;
  padding:8px 12px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.06);
  font-size:14px;
  text-decoration:none;
}
.navbar a:hover{background:rgba(255,255,255,.16)}
.page-title{margin:8px 0 6px;font-size:30px;line-height:1.15}
.page-lead{color:var(--muted);margin:0 0 18px}
.flash-stack{margin:0 0 16px}
.flash{
  padding:12px 14px;border-radius:12px;border:1px solid var(--border);background:#fff;
  margin-bottom:10px;box-shadow:0 5px 16px rgba(23,32,51,.05)
}
.flash-ok{background:var(--success-soft);border-color:#b6ebcb}
.flash-err{background:var(--danger-soft);border-color:#f0b8b5}
.card{
  border:1px solid var(--border);border-radius:var(--radius);padding:16px;background:var(--surface);
  box-shadow:var(--shadow);
}
.card.compact{padding:12px 14px}
.section-title{margin:0 0 12px;font-size:18px}
.small{font-size:12px;color:var(--muted)}
.muted{color:var(--muted)}
.nowrap{white-space:nowrap}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  min-height:38px;padding:8px 14px;border-radius:10px;border:1px solid var(--border-strong);
  background:#fff;color:var(--text);cursor:pointer;font:inherit;text-decoration:none;
  transition:.15s ease;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 16px rgba(33,83,200,.08);text-decoration:none}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-2)}
.btn-danger{border-color:#efb0ab;color:var(--danger);background:#fff}
.btn-soft{background:var(--blue-soft);border-color:#cdddff;color:var(--primary-2)}
.badge{display:inline-flex;align-items:center;padding:4px 9px;border-radius:999px;font-size:12px;font-weight:700}
.badge-primary{background:#dbe8ff;color:var(--primary-2)}
.badge-success{background:#dff7e8;color:var(--success)}
.badge-warning{background:#fff1cd;color:var(--warning)}
.badge-danger{background:#ffe1df;color:var(--danger)}
input[type="text"], input[type="number"], input[type="date"], input[type="time"], select, textarea{
  width:auto;max-width:100%;padding:9px 10px;border-radius:10px;border:1px solid var(--border-strong);
  background:#fff;color:var(--text);font:inherit;
}
label{font-weight:600;color:#33415f}
.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:12px}
table{border-collapse:separate;border-spacing:0;width:100%;background:#fff}
th,td{padding:10px 10px;border-bottom:1px solid var(--border);vertical-align:middle}
th{background:#f6f9fe;color:#31405f;font-size:13px;position:sticky;top:0;z-index:1}
tr:last-child td{border-bottom:none}
tbody tr:nth-child(even) td{background:#fbfcff}
tbody tr:hover td{background:#f5f9ff}
tr.shift-error td{background:#ffe7e5 !important;border-bottom-color:#f1b1aa}
.shift-error-badge{display:inline-block;padding:3px 8px;border-radius:999px;background:var(--danger);color:#fff;font-size:11px;font-weight:700}
.page-hero{
  display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;
  background:linear-gradient(135deg,#ffffff,#f8fbff);margin-bottom:16px
}
.hero-meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.hero-actions{display:flex;gap:8px;flex-wrap:wrap}
.day-card{padding:0;overflow:hidden;margin-bottom:14px}
.day-card-header{
  display:flex;justify-content:space-between;gap:14px;align-items:center;flex-wrap:wrap;
  padding:14px 16px;background:linear-gradient(180deg,#fbfdff,#f1f6ff);border-bottom:1px solid var(--border)
}
.day-title{margin:0;font-size:24px}
.day-meta{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:6px}
.day-card-body{padding:14px 16px}
.section-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:14px;margin-bottom:16px}
.info-strip{display:flex;gap:12px;flex-wrap:wrap}
.info-tile{
  flex:1 1 200px;min-width:180px;padding:14px;border:1px solid var(--border);border-radius:14px;background:#fff;box-shadow:var(--shadow)
}
.info-tile .kicker{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);margin-bottom:6px}
.info-tile .value{font-size:22px;font-weight:700}
.notice-success{background:var(--success-soft);border-color:#c6ebd3}
.notice-danger{background:var(--danger-soft);border-color:#f3c0bd}
.notice-info{background:var(--blue-soft);border-color:#cdddff}
.notice-warning{background:var(--warning-soft);border-color:#eddba8}
.week-card{box-shadow:none;transition:.15s ease}
.week-card:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.week-card.saved{background:linear-gradient(180deg,#eef6ff,#e3f0ff)}
.week-card.selected{outline:3px solid var(--primary)}
.week-title{font-size:20px;font-weight:700;margin-bottom:4px}
.week-range{font-size:14px;color:var(--muted)}
.week-actions{margin-top:12px;display:flex;gap:10px;flex-wrap:wrap}
.info-box{box-shadow:var(--shadow);background:#fff}
.legend-box{box-shadow:inset 0 0 0 1px var(--border-strong)}
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(15,23,42,.45);padding:36px;z-index:9999}
.modal-card{background:#fff;max-width:660px;margin:auto;border-radius:18px;padding:18px;box-shadow:0 20px 44px rgba(15,23,42,.25)}
.modal-card h3{margin-top:0}
.form-row{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}
.form-actions{margin-top:14px;display:flex;gap:8px;justify-content:flex-end}
.empty-state{padding:18px;border:1px dashed var(--border-strong);border-radius:12px;background:#fbfcff;color:var(--muted)}
.status-list{margin-top:12px}
.status-table{max-width:620px}
@media (max-width:1200px){
  .section-grid{grid-template-columns:1fr}
  .weeks-grid{grid-template-columns:repeat(3,minmax(180px,1fr)) !important}
}
@media (max-width:900px){
  .page-shell{padding:14px}
  .day-title{font-size:20px}
  .weeks-grid{grid-template-columns:repeat(2,minmax(160px,1fr)) !important}
}
@media (max-width:640px){
  .navbar{gap:6px}
  .navbar a{font-size:13px;padding:7px 10px}
  .weeks-grid{grid-template-columns:1fr !important}
  .hero-actions,.form-row{width:100%}
}

.nav-logout {
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
  padding: 0.45rem 0.65rem;
}
.nav-logout:hover { text-decoration: underline; }