:root {
  --maroon: #6B1F2A;
  --orange: #E86A2C;
  --cream: #F5E6C8;
  --green: #3B5F42;

  --orange-light: #F4A261;
  --orange-dark: #C8551A;

  --leave-light: #B8929A;
  --leave-dark: #7A3D4A;

  --bg: #FAF7F0;
  --surface: #FFFFFF;
  --text: #1A1A1A;
  --text-muted: #5C5C5C;
  --border: #E0D8CC;
  --danger: #B83232;

  --radius: 12px;
  --shadow: 0 2px 12px rgba(26, 26, 26, 0.08);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
}

.hidden {
  display: none !important;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 12px 8px;
  background: var(--green);
  color: #fff;
}

.header-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
}

.nav-btn {
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.nav-btn:active {
  background: rgba(255, 255, 255, 0.3);
}

/* Summary card */
.summary-card {
  margin: 12px;
  padding: 14px 16px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.summary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
}

.summary-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.summary-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.summary-value {
  font-size: 1.05rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.summary-value.ot-125 { color: var(--orange); }
.summary-value.ot-150 { color: var(--maroon); }
.summary-value.missing { color: var(--danger); }

/* Calendar */
.calendar-section {
  padding: 0 12px 80px;
}

.weekday-row {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 6px;
}

.weekday-cell {
  text-align: center;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 4px 0;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.day-cell {
  aspect-ratio: 1;
  border: none;
  border-radius: 10px;
  padding: 4px;
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  font-size: 0.95rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  transition: transform 0.1s;
}

.day-cell:active {
  transform: scale(0.95);
}

.day-cell.empty {
  background: transparent;
  cursor: default;
  pointer-events: none;
}

.day-cell.no-entry {
  background: var(--surface);
  border: 1.5px dashed var(--border);
  color: var(--text-muted);
}

.day-cell.no-entry.work-day {
  border-color: var(--orange);
  border-style: dotted;
}

.day-cell.weekend {
  background: #EEEAE3;
  color: var(--text-muted);
}

.day-cell .day-num {
  line-height: 1.2;
  z-index: 1;
}

.day-cell .off-office-badge {
  position: absolute;
  top: 2px;
  right: 2px;
  font-size: 0.65rem;
  line-height: 1;
  filter: drop-shadow(0 0 1px rgba(0,0,0,0.3));
}

/* Category colors */
.day-cell.cat-wfo,
.category-btn[data-cat="WFO"] { background: var(--green); color: #fff; }
.day-cell.cat-wfh,
.category-btn[data-cat="WFH"] { background: var(--cream); color: var(--text); border: 1px solid var(--border); }
.day-cell.cat-site,
.category-btn[data-cat="Site"] { background: var(--orange-dark); color: #fff; }
.day-cell.cat-tour,
.category-btn[data-cat="Tour"] { background: var(--orange-light); color: var(--text); }
.day-cell.cat-sick,
.category-btn[data-cat="Sick"] { background: var(--leave-dark); color: #fff; }
.day-cell.cat-dayoff,
.category-btn[data-cat="DayOff"] { background: var(--leave-light); color: #fff; }

.category-btn[data-cat="OOO"] {
  background: var(--maroon);
  color: #fff;
}

.category-btn[data-cat="OOO"].selected {
  outline-color: var(--maroon);
}

/* Bottom nav */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding-bottom: var(--safe-bottom);
  z-index: 50;
}

.bottom-nav-btn {
  flex: 1;
  padding: 14px;
  border: none;
  background: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
}

.bottom-nav-btn.active {
  color: var(--green);
  font-weight: 700;
}

/* Modal */
.modal {
  border: none;
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 0;
  max-width: 100%;
  width: 100%;
  max-height: 92dvh;
  margin: auto 0 0 0;
  box-shadow: 0 -4px 24px rgba(0,0,0,0.15);
}

.modal::backdrop {
  background: rgba(0, 0, 0, 0.4);
}

.modal-inner {
  display: flex;
  flex-direction: column;
  max-height: 92dvh;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px 8px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  margin: 0;
  font-size: 1.1rem;
}

.modal-close {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: var(--bg);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  color: var(--text-muted);
}

.modal-body {
  padding: 12px 16px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px calc(12px + var(--safe-bottom));
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.modal-footer-right {
  display: flex;
  gap: 8px;
}

.read-only-banner {
  background: #FFF8E7;
  border: 1px solid var(--orange);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.82rem;
  color: var(--maroon);
  margin-bottom: 12px;
}

/* Form elements */
.field-group {
  border: none;
  padding: 0;
  margin: 0 0 16px;
}

.field-group legend {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.hint {
  font-weight: 400;
  color: var(--text-muted);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.category-main {
  margin-bottom: 0;
}

.ooo-sub {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}

.ooo-group-label {
  margin: 0 0 6px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--orange-dark);
}

.ooo-group-label.ooo-group-non-work {
  margin-top: 10px;
  color: var(--leave-dark);
}

#ooo-work,
#ooo-non-work {
  margin-bottom: 4px;
}

.category-btn {
  padding: 10px 6px;
  border: 2px solid transparent;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
}

.category-btn.selected {
  outline: 3px solid var(--text);
  outline-offset: 1px;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  cursor: pointer;
  font-size: 0.9rem;
}

.off-office-label {
  display: flex;
  align-items: center;
  gap: 6px;
}

.off-office-flag {
  font-size: 1.1rem;
}

.time-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.time-row label {
  font-size: 0.9rem;
  font-weight: 500;
}

.time-row input[type="time"] {
  font-size: 1rem;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  font-variant-numeric: tabular-nums;
}

.day-stats {
  background: var(--bg);
  border-radius: 8px;
  padding: 12px;
  margin: 12px 0 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.stat-item {
  font-size: 0.82rem;
}

.stat-item strong {
  display: block;
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}

.project-row {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 6px;
  align-items: center;
  margin-bottom: 8px;
}

.project-row input[type="text"] {
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
}

.project-row input[type="time"] {
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  width: 100%;
}

.btn-remove-project {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: #FEE;
  color: var(--danger);
  font-size: 1.1rem;
  cursor: pointer;
  line-height: 1;
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-danger {
  padding: 10px 18px;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary {
  background: var(--green);
  color: #fff;
}

.btn-secondary {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
}

.full-width {
  display: block;
  width: 100%;
  margin-bottom: 8px;
  text-align: center;
}

.file-label {
  cursor: pointer;
}

/* Settings */
.settings-view {
  min-height: 100dvh;
  padding-bottom: 60px;
}

.settings-header {
  justify-content: center;
}

.settings-body {
  padding: 12px;
}

.settings-section {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
}

.settings-section h3 {
  margin: 0 0 12px;
  font-size: 0.95rem;
}

.settings-note {
  margin: 8px 0 0;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Disabled state */
input:disabled,
button:disabled,
.category-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

@media (min-width: 480px) {
  #app,
  .settings-view {
    max-width: 420px;
    margin: 0 auto;
  }

  .modal {
    max-width: 420px;
    margin: auto;
    border-radius: var(--radius);
  }
}