:root {
  --bg: #f4f6f5;
  --surface: #ffffff;
  --surface-strong: #edf3f0;
  --text: #14211e;
  --muted: #65736f;
  --line: #dce4e1;
  --primary: #1f6f5b;
  --primary-strong: #174d41;
  --blue: #2765a8;
  --amber: #9a6400;
  --red: #b42318;
  --green-soft: #e4f2ed;
  --blue-soft: #e5eef8;
  --amber-soft: #fff3d7;
  --red-soft: #fde8e7;
  --shadow: 0 10px 28px rgba(20, 33, 30, 0.08);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.45;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  width: min(100%, 980px);
  margin: 0 auto;
  padding: 18px 14px 88px;
}

.app-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 4px 2px 16px;
}

.app-kicker,
.muted-label,
.subtle {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.app-header h1 {
  margin: 2px 0 0;
  font-size: 1.75rem;
  line-height: 1.1;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.status-pill,
.work-chip,
.history-chip,
.reminder-status {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: var(--surface);
  font-size: 0.82rem;
  white-space: nowrap;
}

.car-strip,
.tool-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.car-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px;
}

.car-strip h2 {
  margin: 2px 0 2px;
  font-size: 1.15rem;
}

.car-strip p:last-child {
  margin: 0;
  color: var(--muted);
}

.tool-panel {
  margin-top: 12px;
  padding: 16px;
}

.primary-button,
.secondary-button,
.ghost-button,
.text-button {
  min-height: 44px;
  border-radius: var(--radius);
  padding: 9px 13px;
  border: 1px solid transparent;
  font-weight: 650;
}

.primary-button {
  color: #ffffff;
  background: var(--primary);
}

.primary-button:focus-visible,
.secondary-button:focus-visible,
.ghost-button:focus-visible,
.text-button:focus-visible,
.tab-button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(31, 111, 91, 0.24);
  outline-offset: 2px;
}

.primary-button:active {
  background: var(--primary-strong);
}

.secondary-button {
  color: var(--primary-strong);
  background: var(--green-soft);
  border-color: #bfd9cf;
}

.ghost-button {
  color: var(--text);
  background: var(--surface);
  border-color: var(--line);
}

.text-button {
  color: var(--muted);
  background: transparent;
}

.full-width-button {
  width: 100%;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.wide-field {
  grid-column: 1 / -1;
}

label span,
.work-grid legend {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 650;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: #ffffff;
  padding: 12px 11px;
}

textarea {
  resize: vertical;
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.section-tabs {
  position: sticky;
  top: 0;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
  margin: 14px 0;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(244, 246, 245, 0.94);
  backdrop-filter: blur(10px);
}

.tab-button {
  min-height: 42px;
  border: 0;
  border-radius: 6px;
  color: var(--muted);
  background: transparent;
  font-weight: 700;
}

.tab-button.is-active {
  color: #ffffff;
  background: var(--primary);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.metric-tile,
.reminder-card,
.history-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.metric-tile {
  min-height: 94px;
  padding: 14px;
}

.metric-tile span {
  display: block;
  color: var(--muted);
  font-size: 0.84rem;
}

.metric-tile strong {
  display: block;
  margin-top: 8px;
  font-size: 1.15rem;
  line-height: 1.25;
}

.panel-title-row,
.list-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.panel-title-row h3,
.list-header h3 {
  margin: 0;
  font-size: 1.05rem;
}

.compact-form {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  align-items: end;
  gap: 10px;
}

.service-fields {
  grid-template-columns: 1fr 1fr;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 16px 0;
  padding: 0;
  border: 0;
}

.work-grid legend {
  grid-column: 1 / -1;
  padding: 0;
}

.work-option {
  display: flex;
  align-items: center;
  min-height: 44px;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.work-option input {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  accent-color: var(--primary);
}

.work-option span {
  margin: 0;
  color: var(--text);
  font-size: 0.94rem;
  font-weight: 600;
}

.comment-field {
  display: block;
  margin-bottom: 14px;
}

.reminder-list,
.history-list,
.interval-list {
  display: grid;
  gap: 10px;
}

.reminder-card,
.history-card {
  padding: 14px;
}

.reminder-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: start;
}

.reminder-card h4,
.history-card h4 {
  margin: 0 0 4px;
  font-size: 1rem;
}

.reminder-card p,
.history-card p {
  margin: 0;
  color: var(--muted);
}

.reminder-status.ok {
  color: var(--primary-strong);
  background: var(--green-soft);
  border-color: #bfd9cf;
}

.reminder-status.soon {
  color: var(--amber);
  background: var(--amber-soft);
  border-color: #f1d28f;
}

.reminder-status.overdue {
  color: var(--red);
  background: var(--red-soft);
  border-color: #f4b6b0;
}

.reminder-status.unknown {
  color: var(--blue);
  background: var(--blue-soft);
  border-color: #bdd2eb;
}

.history-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.history-chip {
  color: var(--primary-strong);
  background: var(--green-soft);
  border-color: #bfd9cf;
}

.empty-state {
  border: 1px dashed #b8c4c0;
  border-radius: var(--radius);
  padding: 18px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.6);
}

.interval-row {
  display: grid;
  grid-template-columns: 1fr minmax(96px, 140px) minmax(96px, 140px);
  gap: 10px;
  align-items: end;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.interval-name {
  margin: 0 0 2px;
  font-weight: 700;
}

.interval-hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 5;
  width: min(calc(100% - 28px), 420px);
  transform: translateX(-50%) translateY(16px);
  border-radius: var(--radius);
  padding: 12px 14px;
  color: #ffffff;
  background: var(--primary-strong);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
  box-shadow: var(--shadow);
}

.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

[hidden] {
  display: none !important;
}

@media (max-width: 720px) {
  .app-shell {
    padding: 14px 10px 96px;
  }

  .app-header {
    align-items: flex-start;
  }

  .app-header h1 {
    font-size: 1.45rem;
  }

  .car-strip {
    align-items: flex-start;
    flex-direction: column;
  }

  .car-strip .secondary-button {
    width: 100%;
  }

  .form-grid,
  .metric-grid,
  .compact-form,
  .service-fields,
  .work-grid,
  .interval-row {
    grid-template-columns: 1fr;
  }

  .section-tabs {
    position: fixed;
    left: 10px;
    right: 10px;
    top: auto;
    bottom: calc(10px + env(safe-area-inset-bottom));
    margin: 0;
    box-shadow: var(--shadow);
  }

  .tab-button {
    min-height: 48px;
    padding: 6px;
    font-size: 0.9rem;
  }
}