/* Auto service-signal kit — industrial clean, energetic, dark surface. */

:root {
  color-scheme: dark light;
  --bg-0: #0b0d10;
  --bg-1: #11151a;
  --bg-2: #161c23;
  --bg-3: #1d242d;
  --line: #2a323d;
  --line-2: #3a4554;
  --text: #e8edf2;
  --text-soft: #b3bcc7;
  --text-mute: #7d8896;
  --accent: #ff7a1a;
  --accent-soft: rgba(255, 122, 26, 0.18);
  --signal-on: #ff5a3c;
  --signal-warn: #ffb648;
  --signal-ok: #6ee7a0;
  --signal-info: #4cb1ff;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-1: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 8px 24px rgba(0, 0, 0, 0.35);
  --pad-x: clamp(16px, 4vw, 24px);
  --t-fast: 140ms;
  --t-med: 240ms;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-0);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(255, 122, 26, 0.08), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(76, 177, 255, 0.06), transparent 60%),
    var(--bg-0);
}

a { color: var(--accent); }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

.app {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--pad-x) 80px;
}

/* Header */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 0 8px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #c64a00);
  display: grid;
  place-items: center;
  color: #1a0d00;
  font-weight: 900;
  font-size: 14px;
  box-shadow: 0 0 0 2px rgba(255, 122, 26, 0.25);
}
.brand small {
  display: block;
  font-weight: 500;
  color: var(--text-mute);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.app-header nav {
  display: flex;
  gap: 6px;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px;
}
.app-header nav button {
  background: transparent;
  color: var(--text-soft);
  border: 0;
  padding: 8px 12px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  min-height: 36px;
}
.app-header nav button[aria-current="true"] {
  background: var(--accent);
  color: #1a0d00;
}

/* Hero */
.hero {
  margin: 14px 0 22px;
  padding: 18px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--bg-1), var(--bg-2));
  border: 1px solid var(--line);
  box-shadow: var(--shadow-1);
}
.hero h1 {
  font-size: clamp(20px, 5vw, 26px);
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}
.hero p {
  margin: 0;
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.45;
}

/* Section card */
.card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  margin: 14px 0;
  box-shadow: var(--shadow-1);
}
.card h2 {
  margin: 0 0 6px;
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-mute);
  font-weight: 700;
}
.card .lede {
  margin: 0 0 14px;
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.45;
}

/* Stepper */
.stepper {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin: 14px 0 18px;
}
.stepper .step {
  height: 6px;
  border-radius: 999px;
  background: var(--bg-3);
  position: relative;
  overflow: hidden;
}
.stepper .step[data-state="done"] { background: var(--accent); }
.stepper .step[data-state="active"] {
  background: var(--bg-3);
}
.stepper .step[data-state="active"]::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--accent), #ffb380);
  transform-origin: left center;
  animation: stepFill var(--t-med) ease-out forwards;
}
@keyframes stepFill {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* Domain accordion */
.domain {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-2);
  margin-bottom: 8px;
  overflow: hidden;
}
.domain > summary {
  list-style: none;
  cursor: pointer;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-weight: 600;
  font-size: 14px;
}
.domain > summary::-webkit-details-marker { display: none; }
.domain > summary::after {
  content: "+";
  color: var(--text-mute);
  font-size: 18px;
  line-height: 1;
  transition: transform var(--t-fast) ease;
}
.domain[open] > summary::after { content: "−"; }
.domain .items {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 0 10px 10px;
}

/* Choice chips */
.chip {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: var(--bg-3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-height: 44px;
  text-align: left;
  color: var(--text);
  font-size: 14px;
  transition: border-color var(--t-fast) ease, background var(--t-fast) ease, transform var(--t-fast) ease;
}
.chip:hover { border-color: var(--line-2); }
.chip input { position: absolute; opacity: 0; pointer-events: none; }
.chip .dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--line-2);
  flex: 0 0 auto;
  transition: background var(--t-fast) ease, box-shadow var(--t-fast) ease;
}
.chip[data-selected="true"] {
  border-color: var(--accent);
  background: linear-gradient(180deg, rgba(255, 122, 26, 0.12), rgba(255, 122, 26, 0.04));
}
.chip[data-selected="true"] .dot {
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.chip .badge {
  margin-left: auto;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-mute);
  border: 1px solid var(--line-2);
  border-radius: 999px;
  padding: 2px 8px;
}

/* Form fields */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}
.field label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-mute);
  font-weight: 700;
}
.field input, .field select, .field textarea {
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 12px;
  font: inherit;
  min-height: 44px;
  width: 100%;
}
.field textarea { min-height: 110px; resize: vertical; line-height: 1.4; }
.field .help {
  font-size: 12px;
  color: var(--text-mute);
}
.field .err {
  font-size: 12px;
  color: var(--signal-on);
  display: none;
}
.field[data-invalid="true"] .err { display: block; }
.field[data-invalid="true"] input,
.field[data-invalid="true"] select,
.field[data-invalid="true"] textarea { border-color: var(--signal-on); }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
@media (max-width: 380px) {
  .grid-2 { grid-template-columns: 1fr; }
}

/* Urgency list */
.urgency {
  display: grid;
  gap: 8px;
}
.urgency .opt {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  min-height: 44px;
}
.urgency .opt .signal {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  margin-top: 6px;
  background: var(--line-2);
  flex: 0 0 auto;
}
.urgency .opt[data-tone="danger"]  .signal { background: var(--signal-on); }
.urgency .opt[data-tone="warning"] .signal { background: var(--signal-warn); }
.urgency .opt[data-tone="caution"] .signal { background: var(--signal-info); }
.urgency .opt[data-tone="ok"]      .signal { background: var(--signal-ok); }
.urgency .opt[data-selected="true"] { border-color: var(--accent); background: var(--bg-3); }
.urgency .opt .opt-label { font-weight: 700; font-size: 14px; }
.urgency .opt .opt-advice { color: var(--text-soft); font-size: 13px; line-height: 1.4; }
.urgency .opt input { position: absolute; opacity: 0; pointer-events: none; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  color: #1a0d00;
  border: 0;
  font-weight: 800;
  font-size: 15px;
  border-radius: 999px;
  padding: 12px 18px;
  min-height: 48px;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--t-fast) ease, filter var(--t-fast) ease;
}
.btn:hover { filter: brightness(1.05); }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }
.btn.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line-2);
}
.btn.btn-danger {
  background: var(--signal-on);
  color: #1a0808;
}
.btn.btn-block { width: 100%; }
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

/* Summary / preview */
.summary {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px;
  display: grid;
  gap: 8px;
}
.summary .row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 10px;
  font-size: 14px;
}
.summary .row dt { color: var(--text-mute); }
.summary .row dd { margin: 0; }

.preview {
  background: #07090c;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px;
  color: #e8edf2;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

/* History list */
.history {
  display: grid;
  gap: 10px;
}
.history-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg-2);
  padding: 12px;
  display: grid;
  gap: 8px;
}
.history-item header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}
.history-item h3 {
  margin: 0;
  font-size: 15px;
}
.history-item .meta {
  font-size: 12px;
  color: var(--text-mute);
}
.history-item .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.history-item .actions .btn {
  min-height: 36px;
  padding: 6px 12px;
  font-size: 13px;
}
.tag {
  display: inline-block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  color: var(--text-soft);
}
.tag[data-tone="danger"]  { color: var(--signal-on);  border-color: rgba(255, 90, 60, 0.45); }
.tag[data-tone="warning"] { color: var(--signal-warn); border-color: rgba(255, 182, 72, 0.45); }
.tag[data-tone="caution"] { color: var(--signal-info); border-color: rgba(76, 177, 255, 0.45); }
.tag[data-tone="ok"]      { color: var(--signal-ok);   border-color: rgba(110, 231, 160, 0.45); }

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(20px);
  background: var(--bg-2);
  color: var(--text);
  border: 1px solid var(--line-2);
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 13px;
  box-shadow: var(--shadow-1);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-med) ease, transform var(--t-med) ease;
  z-index: 50;
}
.toast[data-show="true"] {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Footer */
.app-footer {
  margin-top: 24px;
  color: var(--text-mute);
  font-size: 12px;
  text-align: center;
  line-height: 1.5;
}

/* Dialog */
.dialog-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 7, 9, 0.65);
  display: none;
  align-items: flex-end;
  justify-content: center;
  z-index: 40;
}
.dialog-backdrop[data-open="true"] { display: flex; }
.dialog {
  background: var(--bg-1);
  border-top: 1px solid var(--line-2);
  border-radius: 18px 18px 0 0;
  width: 100%;
  max-width: 560px;
  padding: 18px;
  max-height: 86vh;
  overflow: auto;
  box-shadow: 0 -12px 32px rgba(0, 0, 0, 0.5);
}
@media (min-width: 720px) {
  .dialog-backdrop { align-items: center; }
  .dialog { border-radius: 18px; border: 1px solid var(--line-2); }
}
.dialog h2 {
  margin: 0 0 12px;
  font-size: 16px;
}

/* View transitions */
.view {
  display: none;
}
.view[data-active="true"] {
  display: block;
  animation: viewIn var(--t-med) ease;
}
@keyframes viewIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Reduced motion: kill all non-essential animation */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0ms !important;
    scroll-behavior: auto !important;
  }
  .stepper .step[data-state="active"]::after { display: none; }
  .stepper .step[data-state="active"] { background: var(--accent); opacity: 0.6; }
}

/* Visually hidden helper */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}