:root {
  --primary:      #3B82F6;
  --primary-dark: #2563EB;
  --bg:           #F1F5F9;
  --surface:      #FFFFFF;
  --border:       #E2E8F0;
  --text:         #0F172A;
  --text-muted:   #64748B;
  --error-bg:     #FEF2F2;
  --error-text:   #DC2626;
  --error-border: #FECACA;
  --ok-bg:        #F0FDF4;
  --ok-text:      #16A34A;
  --ok-border:    #BBF7D0;
  --shadow:       0 1px 3px rgba(0,0,0,.10), 0 1px 2px rgba(0,0,0,.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.5;
}

/* ── Auth pages ──────────────────────────────── */

.auth-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.auth-card {
  background: var(--surface);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 2rem;
  width: 100%;
  max-width: 400px;
}

.auth-card h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: .25rem;
}

.auth-card .subtitle {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: .875rem;
}

.auth-footer {
  margin-top: 1.25rem;
  text-align: center;
  font-size: .875rem;
  color: var(--text-muted);
}

.auth-footer a { color: var(--primary); text-decoration: none; }
.auth-footer a:hover { text-decoration: underline; }

/* ── Navigation ──────────────────────────────── */

nav {
  background: var(--primary-dark);
  color: white;
  padding: 0 1.5rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(0,0,0,.2);
}

nav .brand { font-weight: 700; font-size: 1rem; }

nav .user-info {
  display: flex;
  align-items: center;
  gap: .875rem;
  font-size: .875rem;
}

/* ── Layout ──────────────────────────────────── */

.main-content {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

/* ── Cards ───────────────────────────────────── */

.card {
  background: var(--surface);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.card-title {
  font-size: .9375rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--border);
}

/* ── Forms ───────────────────────────────────── */

.form-group { margin-bottom: 1rem; }

.form-group label {
  display: block;
  font-weight: 500;
  font-size: .875rem;
  margin-bottom: .3rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: .5rem .75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: .9rem;
  font-family: inherit;
  background: var(--surface);
  transition: border-color .15s, box-shadow .15s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,.12);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group textarea { resize: vertical; min-height: 80px; }

/* ── Buttons ─────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .5rem 1rem;
  border: none;
  border-radius: 6px;
  font-size: .875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, opacity .15s;
  font-family: inherit;
  white-space: nowrap;
}

.btn:disabled { opacity: .6; cursor: not-allowed; }

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-dark); }

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-outline:hover:not(:disabled) { background: rgba(59,130,246,.06); }

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,.4);
}
.btn-ghost:hover { background: rgba(255,255,255,.12); }

.btn-sm  { padding: .3rem .65rem; font-size: .8rem; }
.btn-full { width: 100%; }

/* ── Messages ────────────────────────────────── */

.msg {
  padding: .6rem .875rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  font-size: .875rem;
}

.msg-error   { background: var(--error-bg);  color: var(--error-text);  border: 1px solid var(--error-border); }
.msg-success { background: var(--ok-bg);     color: var(--ok-text);     border: 1px solid var(--ok-border); }
.hidden { display: none !important; }

/* ── Tabs ────────────────────────────────────── */

.tabs {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1.25rem;
}

.tab-btn {
  padding: .6rem 1.25rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  transition: color .15s, border-color .15s;
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* ── Tables ──────────────────────────────────── */

.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }

table { width: 100%; border-collapse: collapse; font-size: .875rem; }

th {
  text-align: left;
  padding: .6rem .875rem;
  background: #F8FAFC;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}

td {
  padding: .6rem .875rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: #F8FAFC; }

tfoot td {
  font-weight: 600;
  background: #F8FAFC;
  border-top: 2px solid var(--border);
}

.clickable-row { cursor: pointer; }
.clickable-row:hover td { background: #EFF6FF !important; }

/* ── Stats chips ─────────────────────────────── */

.stats-grid {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.stat-chip {
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
  border-radius: 8px;
  padding: .5rem .875rem;
  min-width: 100px;
}

.stat-chip .week  { color: var(--text-muted); font-size: .75rem; margin-bottom: .1rem; }
.stat-chip .hours { font-weight: 700; color: var(--primary-dark); font-size: 1.1rem; }

.stat-chip.total {
  background: #DBEAFE;
  border-color: #93C5FD;
}

/* ── Filter row ──────────────────────────────── */

.filter-row {
  display: flex;
  align-items: center;
  gap: .625rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.filter-row label { font-weight: 500; font-size: .875rem; white-space: nowrap; }

.filter-row select,
.filter-row input[type="number"] {
  padding: .375rem .6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: .875rem;
  font-family: inherit;
  background: var(--surface);
}

.filter-row input[type="number"] { width: 90px; }

/* ── Modal ───────────────────────────────────── */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 1rem;
}

.modal-box {
  background: var(--surface);
  border-radius: 10px;
  width: 100%;
  max-width: 700px;
  max-height: 82vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 40px rgba(0,0,0,.18);
}

.modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: .9375rem;
  flex-shrink: 0;
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  flex: 1;
}

/* ── States ──────────────────────────────────── */

.loading, .empty {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: .875rem;
}

/* ── Badges ──────────────────────────────────── */

.badge {
  display: inline-block;
  padding: .15rem .5rem;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge-blue  { background: #EFF6FF; color: #1D4ED8; border: 1px solid #BFDBFE; }
.badge-green { background: #F0FDF4; color: #15803D; border: 1px solid #BBF7D0; }

/* ── Nav badge ───────────────────────────────── */

.nav-badge {
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 999px;
  padding: .15rem .6rem;
  font-size: .78rem;
}

/* ── Info chips ──────────────────────────────── */

.info-chips {
  display: flex;
  gap: .5rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  gap: .3rem;
  align-items: center;
  padding: .3rem .75rem;
  border-radius: 6px;
  font-size: .82rem;
}

.chip-blue  { background: #EFF6FF; color: #1e40af; border: 1px solid #BFDBFE; }
.chip-green { background: #F0FDF4; color: #166534; border: 1px solid #BBF7D0; }

/* ── Inline form ─────────────────────────────── */

.inline-form {
  display: flex;
  gap: .625rem;
  align-items: center;
  flex-wrap: wrap;
}

.inline-input {
  padding: .45rem .75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: .875rem;
  font-family: inherit;
  flex: 1;
  min-width: 120px;
}

.inline-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,.12);
}

/* ── Checkbox list ───────────────────────────── */

.checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  max-height: 260px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.check-item {
  display: flex;
  align-items: center;
  gap: .625rem;
  padding: .7rem .875rem;
  cursor: pointer;
  font-size: .9rem;
  border-bottom: 1px solid var(--border);
  transition: background .1s;
}

.check-item:last-child { border-bottom: none; }
.check-item:hover { background: #F8FAFC; }

.check-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  accent-color: var(--primary);
  cursor: pointer;
}

/* ── Manual work order list ──────────────────── */

.extra-label {
  font-size: .8rem;
  color: var(--text-muted);
  margin-bottom: .3rem;
}

.manual-wo-row {
  display: flex;
  gap: .4rem;
  margin-bottom: .35rem;
  align-items: center;
}

.manual-wo-row input {
  flex: 1;
}

.btn-remove {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #FEF2F2;
  color: #DC2626;
  font-size: .8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.btn-remove:hover { background: #FEE2E2; }

/* ── Import example hint ─────────────────────── */

.import-example {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: #F8FAFC;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .4rem .75rem;
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: .4rem;
  font-family: monospace;
}

/* ── Helper text ─────────────────────────────── */

.helper-text {
  color: var(--text-muted);
  font-size: .82rem;
}

/* ── Filter grid ─────────────────────────────── */

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: .75rem;
  margin-bottom: .5rem;
}

.filter-item label {
  display: block;
  font-weight: 500;
  font-size: .8rem;
  margin-bottom: .25rem;
  color: var(--text-muted);
}

.filter-item input,
.filter-item select {
  width: 100%;
  padding: .4rem .65rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: .875rem;
  font-family: inherit;
  background: var(--surface);
}

/* ── Stats three-column ──────────────────────── */

.stats-three {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.stats-three .card { margin-bottom: 0; }

/* ── Timeline (horizontal swipeable bar chart) ── */

.timeline-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  cursor: grab;
  user-select: none;
  padding-bottom: .5rem;
  /* hide scrollbar but keep functional */
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.timeline-wrap:active { cursor: grabbing; }

.timeline-wrap::-webkit-scrollbar { height: 4px; }
.timeline-wrap::-webkit-scrollbar-track { background: transparent; }
.timeline-wrap::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.timeline-chart {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  min-width: max-content;
  height: 160px;
  padding-top: 28px; /* room for count label above bar */
  padding-bottom: 4px;
}

.tl-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  width: 48px;
  height: 100%;
  position: relative;
}

.tl-count {
  font-size: .72rem;
  font-weight: 700;
  color: var(--primary-dark);
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
}

.tl-bar {
  width: 32px;
  background: var(--primary);
  border-radius: 5px 5px 0 0;
  min-height: 4px;
  transition: height .3s ease;
  flex-shrink: 0;
}

.tl-date {
  font-size: .68rem;
  color: var(--text-muted);
  margin-top: 5px;
  white-space: nowrap;
  text-align: center;
}

/* ── Responsive ──────────────────────────────── */

@media (max-width: 600px) {
  nav { padding: 0 1rem; }
  nav .brand { font-size: .9rem; }
  .main-content { padding: 1rem .75rem; }
  .auth-card { padding: 1.5rem 1.25rem; }
  .form-row { grid-template-columns: 1fr; }
  .card { padding: 1.25rem 1rem; }
  .filter-grid { grid-template-columns: 1fr 1fr; }
  .stats-three { grid-template-columns: 1fr; }
}