:root {--primary: #6366f1; --primary-dark: #4f46e5; --primary-soft: #eef2ff; --danger: #ef4444; --danger-soft: #fef2f2; --success: #10b981; --success-soft: #ecfdf5; --warn: #f59e0b; --warn-soft: #fffbeb; --text: #1e293b; --text-muted: #64748b; --text-faint: #94a3b8; --border: #e2e8f0; --border-strong: #cbd5e1; --bg: #f1f5f9; --surface: #fff;}
* {box-sizing: border-box; margin: 0; padding: 0;}
body {font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.5; -webkit-font-smoothing: antialiased;}
a {color: var(--primary); text-decoration: none;}
a:hover {text-decoration: underline;}

/* Header */
.site-header {background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50;}
.site-header-inner {max-width: 1440px; margin: 0 auto; padding: 0 20px; display: flex; align-items: center; gap: 28px; height: 56px;}
.brand {font-weight: 700; font-size: 1.05em; color: var(--primary); white-space: nowrap;}
.brand:hover {text-decoration: none;}
.nav {display: flex; gap: 2px; flex: 1; overflow-x: auto;}
.nav a {padding: 7px 12px; border-radius: 7px; font-size: 0.9em; font-weight: 500; color: var(--text-muted); white-space: nowrap;}
.nav a:hover {background: var(--bg); color: var(--text); text-decoration: none;}
.nav a.active {background: var(--primary-soft); color: var(--primary-dark); font-weight: 600;}
.header-right {display: flex; align-items: center; gap: 14px; font-size: 0.85em; color: var(--text-faint); white-space: nowrap;}

/* Layout */
.wrap {max-width: 1440px; margin: 0 auto; padding: 24px 20px 64px;}
.page-head {display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 20px; flex-wrap: wrap;}
.page-head h1 {font-size: 1.4em; font-weight: 700; letter-spacing: -0.01em;}
.page-head .sub {font-size: 0.88em; color: var(--text-muted); margin-top: 2px;}
.head-actions {display: flex; gap: 8px; align-items: center;}

/* Panels */
.panel {background: var(--surface); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 20px; overflow: hidden;}
.panel-head {padding: 13px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;}
.panel-head h2 {font-size: 0.82em; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted);}
.panel-body {padding: 18px;}
.panel-body.flush {padding: 0;}

/* Stat row (row-based, not a card grid) */
.stat-row {display: flex; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 20px; overflow: hidden; flex-wrap: wrap;}
.stat {flex: 1 1 160px; padding: 14px 18px; border-right: 1px solid var(--border); min-width: 0;}
.stat:last-child {border-right: none;}
.stat-label {font-size: 0.72em; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-faint); margin-bottom: 5px;}
.stat-value {font-size: 1.5em; font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums;}
.stat-meta {font-size: 0.78em; color: var(--text-muted); margin-top: 2px;}
.stat-value.pos {color: var(--success);} .stat-value.warn {color: var(--warn);} .stat-value.muted {color: var(--text-faint);}

/* Tables */
.tbl {width: 100%; border-collapse: collapse; font-size: 0.9em;}
.tbl th {text-align: left; padding: 9px 14px; font-size: 0.74em; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-faint); background: #f8fafc; border-bottom: 1px solid var(--border); white-space: nowrap;}
.tbl td {padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: middle;}
.tbl tbody tr:last-child td {border-bottom: none;}
.tbl tbody tr:hover {background: #fafbfc;}
.tbl .num {text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap;}
.tbl .shrink {width: 1%; white-space: nowrap;}
.tbl tfoot td {padding: 11px 14px; font-weight: 700; background: #f8fafc; border-top: 2px solid var(--border-strong); font-variant-numeric: tabular-nums;}
.tbl .row-muted td {color: var(--text-faint);}
.tbl-scroll {overflow-x: auto;}

/* Forms */
.field {margin-bottom: 14px;}
.field label {display: block; font-size: 0.75em; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); margin-bottom: 5px;}
.field .hint {font-size: 0.8em; color: var(--text-faint); margin-top: 4px; text-transform: none; letter-spacing: 0; font-weight: 400;}
input[type=text], input[type=password], input[type=date], input[type=number], input[type=email], select, textarea {width: 100%; padding: 9px 11px; border: 1px solid var(--border-strong); border-radius: 8px; font-size: 0.93em; font-family: inherit; color: var(--text); background: var(--surface); outline: none; transition: border-color 0.15s, box-shadow 0.15s;}
input:focus, select:focus, textarea:focus {border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.12);}
textarea {resize: vertical; min-height: 68px;}
select {appearance: none; background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3e%3cpolyline points='6 9 12 15 18 9'/%3e%3c/svg%3e"); background-repeat: no-repeat; background-position: right 9px center; background-size: 15px; padding-right: 32px;}
.form-row {display: flex; gap: 12px; flex-wrap: wrap;}
.form-row .field {flex: 1 1 160px; min-width: 0;}
.form-row .field.narrow {flex: 0 1 120px;}
.form-row .field.wide {flex: 3 1 280px;}
.inline-form {display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap;}
.inline-form .field {margin-bottom: 0;}

/* Buttons */
.btn {display: inline-flex; align-items: center; gap: 6px; padding: 9px 15px; border: 1px solid transparent; border-radius: 8px; font-size: 0.88em; font-weight: 600; font-family: inherit; cursor: pointer; background: var(--primary); color: #fff; transition: background 0.15s, border-color 0.15s; white-space: nowrap; line-height: 1.2;}
.btn:hover {background: var(--primary-dark); text-decoration: none; color: #fff;}
.btn.secondary {background: var(--surface); color: var(--text); border-color: var(--border-strong);}
.btn.secondary:hover {background: var(--bg); color: var(--text);}
.btn.danger {background: var(--danger);} .btn.danger:hover {background: #dc2626;}
.btn.sm {padding: 5px 10px; font-size: 0.8em;}
.btn.link {background: none; color: var(--text-muted); border: none; padding: 4px 6px;}
.btn.link:hover {background: var(--bg); color: var(--text);}
.btn.link.danger {color: var(--danger);} .btn.link.danger:hover {background: var(--danger-soft);}
.btn:disabled {opacity: 0.5; cursor: not-allowed;}

/* Badges */
.badge {display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 0.73em; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; white-space: nowrap;}
.badge.draft {background: var(--bg); color: var(--text-muted);}
.badge.issued {background: var(--warn-soft); color: #b45309;}
.badge.paid {background: var(--success-soft); color: #047857;}
.badge.billed {background: var(--primary-soft); color: var(--primary-dark);}
.badge.unbilled {background: var(--warn-soft); color: #b45309;}
.badge.nonbill {background: var(--bg); color: var(--text-faint);}
.badge.archived {background: var(--bg); color: var(--text-faint);}

/* Flash + empty */
.flash {padding: 11px 16px; border-radius: 9px; margin-bottom: 18px; font-size: 0.9em; border: 1px solid;}
.flash.success {background: var(--success-soft); border-color: #a7f3d0; color: #047857;}
.flash.error {background: var(--danger-soft); border-color: #fecaca; color: #b91c1c;}
.flash.info {background: var(--primary-soft); border-color: #c7d2fe; color: var(--primary-dark);}
.empty {padding: 44px 20px; text-align: center; color: var(--text-faint); font-size: 0.92em;}
.empty strong {display: block; color: var(--text-muted); font-size: 1.05em; margin-bottom: 4px;}

/* Filter bar */
.filters {display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; padding: 14px 18px; background: #f8fafc; border-bottom: 1px solid var(--border);}
.filters .field {margin-bottom: 0; flex: 0 1 150px;}
.filters .field label {font-size: 0.7em;}
.filters .spacer {flex: 1 1 auto;}

/* Timesheet grid */
.grid-day {min-width: 74px;}
.grid-day input {padding: 6px 7px; font-size: 0.85em; text-align: right; font-variant-numeric: tabular-nums;}
.week-nav {display: flex; align-items: center; gap: 10px;}
.week-nav .label {font-weight: 600; font-size: 0.92em; min-width: 190px; text-align: center;}

/* Print */
@media print {
  .site-header, .head-actions, .no-print {display: none !important;}
  body {background: #fff; font-size: 12px;}
  .wrap {padding: 0; max-width: none;}
  .panel {border: none; box-shadow: none; margin-bottom: 12px;}
  .tbl th {background: #fff;}
}

@media (max-width: 720px) {
  .site-header-inner {gap: 14px; padding: 0 14px;}
  .header-right .who {display: none;}
  .wrap {padding: 16px 14px 48px;}
  .stat {flex-basis: 50%; border-bottom: 1px solid var(--border);}
}

/* Pager */
.pager {display: flex; align-items: center; justify-content: center; gap: 14px; padding: 14px 18px; border-top: 1px solid var(--border); background: #f8fafc;}
.pager-label {font-size: 0.85em; color: var(--text-muted); font-variant-numeric: tabular-nums;}