/* ── Variables ─────────────────────────────────────────────────────────────── */
:root {
  --blue:        #1d4ed8;
  --blue-dark:   #1e40af;
  --blue-light:  #eff6ff;
  --blue-mid:    #bfdbfe;
  --green:       #059669;
  --green-light: #ecfdf5;
  --amber:       #d97706;
  --amber-light: #fffbeb;
  --red:         #dc2626;
  --red-light:   #fef2f2;
  --bg:          #f8fafc;
  --surface:     #ffffff;
  --border:      #e2e8f0;
  --text:        #0f172a;
  --text-sec:    #475569;
  --text-muted:  #94a3b8;
  --shadow:      0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --radius:      8px;
  --header-h:    56px;
  --nav-h:       68px;
}

/* ── Reset ─────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  padding-top: var(--header-h);
  padding-bottom: calc(var(--nav-h) + env(safe-area-inset-bottom, 0px));
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); }
button { font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ── Header ────────────────────────────────────────────────────────────────── */
.app-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--blue);
  color: white;
  display: flex;
  align-items: center;
  padding: 0 12px 0 16px;
  gap: 8px;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,.2);
}

.header-logo {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -.01em;
  flex: 1;
}

.header-logo span { opacity: .7; font-weight: 400; font-size: 14px; margin-left: 6px; }

#header-user { font-size: 13px; opacity: .8; max-width: 100px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

#sync-badge { font-size: 11px; padding: 2px 8px; border-radius: 999px; }
.sync-ok { color: transparent; }
.sync-pending { background: var(--amber); color: white; }
.sync-error   { background: var(--red); color: white; }

.header-btn {
  background: rgba(255,255,255,.15);
  border: none;
  color: white;
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
}
.header-btn:active { background: rgba(255,255,255,.25); }

/* ── Bottom nav ────────────────────────────────────────────────────────────── */
.bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: flex;
  z-index: 100;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 500;
  padding: 8px 2px;
  transition: color .15s;
  -webkit-tap-highlight-color: transparent;
}

.nav-item.active { color: var(--blue); }
.nav-icon { font-size: 22px; line-height: 1; }

/* ── Main content ──────────────────────────────────────────────────────────── */
.main-content {
  padding: 16px;
  max-width: 640px;
  margin: 0 auto;
}

/* ── Cards ─────────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 16px;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}

.card-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
  margin-top: -8px;
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 20px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: opacity .15s, transform .1s, background .15s;
  min-height: 44px;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .5; pointer-events: none; }

.btn-primary  { background: var(--blue); color: white; border-color: var(--blue); }
.btn-primary:hover { background: var(--blue-dark); border-color: var(--blue-dark); }
.btn-success  { background: var(--green); color: white; border-color: var(--green); }
.btn-danger   { background: var(--red); color: white; border-color: var(--red); }
.btn-amber    { background: var(--amber); color: white; border-color: var(--amber); }
.btn-secondary { background: white; color: var(--blue); border-color: var(--blue); }
.btn-ghost    { background: transparent; color: var(--text-sec); border-color: var(--border); }

.btn-sm   { padding: 7px 14px; font-size: 13px; min-height: 36px; }
.btn-lg   { padding: 14px 24px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-icon  { padding: 10px; min-width: 44px; min-height: 44px; border-radius: 50%; }

/* ── Forms ─────────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }

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

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
}

.form-label .req { color: var(--red); }

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 11px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 16px;
  color: var(--text);
  background: var(--surface);
  appearance: none;
  -webkit-appearance: none;
  transition: border-color .15s, box-shadow .15s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(29,78,216,.12);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

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

.form-hint { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.form-error { font-size: 12px; color: var(--red); margin-top: 4px; display: none; }
.form-error.visible { display: block; }

/* ── Range inputs ──────────────────────────────────────────────────────────── */
.level-wrap { margin-top: 4px; }
.level-input { width: 100%; accent-color: var(--blue); height: 6px; cursor: pointer; }
.level-display {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 6px;
}
.level-value {
  font-size: 14px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 999px;
  border: 2px solid var(--border);
}
.level-value.level-bad   { border-color: var(--red);   color: var(--red);   background: var(--red-light); }
.level-value.level-warn  { border-color: var(--amber); color: var(--amber); background: var(--amber-light); }
.level-value.level-ok    { border-color: var(--green); color: var(--green); background: var(--green-light); }
.level-ticks { display: flex; justify-content: space-between; font-size: 10px; color: var(--text-muted); padding: 0 1px; }

/* ── Checklist (VDI) ───────────────────────────────────────────────────────── */
.check-section { margin-bottom: 4px; }

.check-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--blue-light);
  border-radius: var(--radius) var(--radius) 0 0;
  border: 1.5px solid var(--blue-mid);
  border-bottom: none;
  gap: 10px;
}

.check-section-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--blue-dark);
  flex: 1;
}

.check-list {
  border: 1.5px solid var(--border);
  border-radius: 0 0 var(--radius) var(--radius);
  overflow: hidden;
  margin-bottom: 16px;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background .1s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.check-item:last-child { border-bottom: none; }
.check-item:active     { background: var(--bg); }
.check-item.ok         { background: transparent; }
.check-item.flagged    { background: var(--red-light); }

.check-dot {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
  border: 2px solid var(--border);
  color: var(--text-muted);
  transition: all .15s;
}

.check-item.ok .check-dot     { background: var(--green); border-color: var(--green); color: white; }
.check-item.flagged .check-dot { background: var(--red);   border-color: var(--red);  color: white; }

.check-label { flex: 1; font-size: 14px; line-height: 1.4; }
.check-item.flagged .check-label { color: var(--red); font-weight: 500; }

/* ── Crew management ───────────────────────────────────────────────────────── */
.crew-list { display: flex; flex-direction: column; gap: 10px; }

.crew-slot {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color .15s;
}

.crew-slot.is-driver {
  border-color: var(--blue);
  background: var(--blue-light);
}

.crew-slot.signed-off { opacity: .6; }

.crew-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--blue);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
  flex-shrink: 0;
}

.crew-info { flex: 1; min-width: 0; }
.crew-name { font-weight: 600; font-size: 15px; }
.crew-meta { font-size: 12px; color: var(--text-muted); margin-top: 1px; }

.crew-actions { display: flex; gap: 6px; align-items: center; flex-shrink: 0; }

/* ── Active shift banner ───────────────────────────────────────────────────── */
.shift-banner {
  background: var(--green);
  color: white;
  padding: 14px 16px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.shift-banner-icon { font-size: 28px; }
.shift-banner-body { flex: 1; }
.shift-banner-title { font-weight: 700; font-size: 16px; }
.shift-banner-sub   { font-size: 13px; opacity: .85; margin-top: 2px; }

/* ── Badges ────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}

.badge-blue   { background: var(--blue-light);  color: var(--blue-dark); }
.badge-green  { background: var(--green-light); color: #065f46; }
.badge-amber  { background: var(--amber-light); color: #78350f; }
.badge-red    { background: var(--red-light);   color: #7f1d1d; }
.badge-grey   { background: var(--bg); color: var(--text-muted); border: 1px solid var(--border); }

/* ── RAG indicators ────────────────────────────────────────────────────────── */
.rag {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.rag-red   { background: var(--red); }
.rag-amber { background: var(--amber); }
.rag-green { background: var(--green); }
.rag-grey  { background: var(--text-muted); }

/* ── Alerts ────────────────────────────────────────────────────────────────── */
.alert {
  padding: 12px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  border: 1px solid transparent;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 16px;
}
.alert-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }
.alert-info    { background: var(--blue-light);  border-color: var(--blue-mid); color: var(--blue-dark); }
.alert-success { background: var(--green-light); border-color: #a7f3d0; color: #065f46; }
.alert-warning { background: var(--amber-light); border-color: #fcd34d; color: #78350f; }
.alert-danger  { background: var(--red-light);   border-color: #fca5a5; color: #7f1d1d; }

/* ── Stats grid ────────────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.stat-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px 12px;
  text-align: center;
  box-shadow: var(--shadow);
}

.stat-value {
  font-size: 30px;
  font-weight: 700;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label { font-size: 12px; color: var(--text-muted); }

/* ── Data table ────────────────────────────────────────────────────────────── */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  white-space: nowrap;
}

.data-table th {
  text-align: left;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-muted);
  padding: 9px 12px;
  border-bottom: 2px solid var(--border);
  background: var(--bg);
}

.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover td { background: var(--bg); }

/* ── Section heading ───────────────────────────────────────────────────────── */
.section-heading {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  margin: 20px 0 10px;
}
.section-heading:first-child { margin-top: 0; }

/* ── Login page ────────────────────────────────────────────────────────────── */
.login-page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: linear-gradient(160deg, var(--blue-dark) 0%, var(--blue) 100%);
  padding-top: 0;
  padding-bottom: 0;
}

.login-card {
  background: var(--surface);
  border-radius: 16px;
  padding: 32px 24px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 24px 64px rgba(0,0,0,.35);
}

.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: var(--blue-light);
  border-radius: 16px;
  font-size: 32px;
  margin-bottom: 14px;
}
.login-logo h1 { font-size: 22px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.login-logo p  { font-size: 14px; color: var(--text-muted); }

/* ── Loading / empty ───────────────────────────────────────────────────────── */
.loading {
  text-align: center;
  padding: 40px 24px;
  color: var(--text-muted);
}

.spinner {
  width: 30px; height: 30px;
  border: 3px solid var(--border);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  margin: 0 auto 12px;
}

@keyframes spin { to { transform: rotate(360deg); } }

.empty-state {
  text-align: center;
  padding: 40px 24px;
  color: var(--text-muted);
}
.empty-state-icon { font-size: 40px; margin-bottom: 10px; }
.empty-state h3   { font-size: 16px; font-weight: 600; color: var(--text-sec); margin-bottom: 6px; }
.empty-state p    { font-size: 14px; }

/* ── Toast ─────────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: calc(var(--nav-h) + env(safe-area-inset-bottom, 0px) + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: #1e293b;
  color: white;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 14px;
  opacity: 0;
  transition: opacity .25s, transform .25s;
  z-index: 300;
  white-space: nowrap;
  max-width: calc(100vw - 32px);
  text-align: center;
  pointer-events: none;
}
.toast.show           { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.toast-success  { background: var(--green); }
.toast.toast-error    { background: var(--red); }
.toast.toast-warning  { background: var(--amber); }

/* ── Utilities ─────────────────────────────────────────────────────────────── */
.hidden   { display: none !important; }
.flex     { display: flex; }
.flex-1   { flex: 1; }
.gap-2    { gap: 8px; }
.gap-3    { gap: 12px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-sm   { font-size: 13px; }
.text-xs   { font-size: 12px; }
.text-muted { color: var(--text-muted); }
.text-sec   { color: var(--text-sec); }
.font-bold  { font-weight: 700; }
.font-semi  { font-weight: 600; }
.mt-0  { margin-top: 0; }
.mb-0  { margin-bottom: 0; }
.mb-2  { margin-bottom: 8px; }
.mb-4  { margin-bottom: 16px; }
.w-full { width: 100%; }
.divider { border: none; border-top: 1px solid var(--border); margin: 16px 0; }

/* ── Compliance expiry table ───────────────────────────────────────────────── */
.expiry-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.expiry-item:last-child { border-bottom: none; }
.expiry-name { flex: 1; }
.expiry-date { font-size: 13px; font-weight: 500; min-width: 60px; text-align: right; }

/* ── Filter bar ────────────────────────────────────────────────────────────── */
.filter-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.filter-bar .form-input,
.filter-bar .form-select { font-size: 14px; padding: 8px 10px; }

/* ── Submission list item ──────────────────────────────────────────────────── */
.sub-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.sub-item:last-child { border-bottom: none; }
.sub-item-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--blue-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.sub-item-body { flex: 1; min-width: 0; }
.sub-item-title { font-weight: 500; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sub-item-meta  { font-size: 12px; color: var(--text-muted); margin-top: 1px; }

/* ── Modal (simple) ────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  display: flex;
  align-items: flex-end;
  z-index: 200;
}
.modal-overlay.hidden { display: none; }
.modal-sheet {
  background: var(--surface);
  border-radius: 16px 16px 0 0;
  padding: 20px 20px calc(20px + env(safe-area-inset-bottom, 0px));
  width: 100%;
  max-height: 85dvh;
  overflow-y: auto;
}
.modal-title { font-size: 17px; font-weight: 700; margin-bottom: 16px; }
.modal-handle {
  width: 40px; height: 4px;
  background: var(--border);
  border-radius: 2px;
  margin: 0 auto 16px;
}