:root {
  --bg0: #e7eef5;
  --bg1: #d5e0ea;
  --ink: #122033;
  --muted: #5a6b7c;
  --line: rgba(18, 32, 51, 0.12);
  --panel: rgba(248, 251, 255, 0.84);
  --accent: #0f766e;
  --accent-ink: #f3fffc;
  --ok: #0f766e;
  --shadow: 0 18px 50px rgba(18, 40, 64, 0.12);
  --radius: 22px;
  --font-display: "Syne", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at 14% 16%, rgba(15, 118, 110, 0.16), transparent 34%),
    radial-gradient(circle at 90% 10%, rgba(37, 99, 235, 0.12), transparent 30%),
    linear-gradient(160deg, var(--bg0), var(--bg1));
}

body {
  min-height: 100vh;
}

.page {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.brand {
  display: flex;
  gap: 14px;
  align-items: center;
}

.brand-mark {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--accent-ink);
  background: linear-gradient(145deg, #14958b, #0b5f59);
  box-shadow: 0 10px 24px rgba(11, 95, 89, 0.28);
}

.brand h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.brand p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.top-meta {
  color: var(--muted);
  font-size: 0.88rem;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(248, 251, 255, 0.55);
  backdrop-filter: blur(8px);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.config-panel {
  margin-bottom: 18px;
  padding: 16px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.config-panel[hidden] {
  display: none !important;
}

.config-panel h2 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.config-desc {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

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

.config-grid label {
  display: grid;
  gap: 6px;
}

.config-grid span {
  font-size: 0.82rem;
  color: var(--muted);
}

.config-grid input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font: 500 0.95rem var(--font-body);
  background: #fff;
  color: var(--ink);
}

.config-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
}

.config-status {
  color: var(--muted);
  font-size: 0.86rem;
}

@media (max-width: 860px) {
  .config-grid {
    grid-template-columns: 1fr;
  }
}

.stage {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
  align-items: start;
}

.camera-panel,
.result-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.camera-panel {
  padding: 14px;
}

.viewport {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  aspect-ratio: 4 / 3;
  min-height: 240px;
  background: #0b1220;
}

.viewport video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: #0b1220;
  z-index: 1;
}

.viewport video[hidden] {
  display: none !important;
}

.viewport img#preview {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: #0b1220;
  z-index: 2;
}

.viewport img#preview[hidden] {
  display: none !important;
}

.viewport.is-preview .frame-guide,
.viewport.is-preview .guide-text {
  display: none;
}

.frame-guide {
  pointer-events: none;
  position: absolute;
  inset: 18% 10%;
  z-index: 3;
  border: 1.5px solid rgba(220, 250, 246, 0.8);
  border-radius: 12px;
  box-shadow: 0 0 0 999px rgba(8, 16, 28, 0.3);
}

.frame-guide span {
  position: absolute;
  width: 18px;
  height: 18px;
  border: 3px solid #9af5ea;
}

.frame-guide span:nth-child(1) {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}
.frame-guide span:nth-child(2) {
  top: -2px;
  right: -2px;
  border-left: 0;
  border-bottom: 0;
}
.frame-guide span:nth-child(3) {
  bottom: -2px;
  left: -2px;
  border-right: 0;
  border-top: 0;
}
.frame-guide span:nth-child(4) {
  bottom: -2px;
  right: -2px;
  border-left: 0;
  border-top: 0;
}

.guide-text {
  position: absolute;
  left: 50%;
  bottom: 14px;
  z-index: 4;
  transform: translateX(-50%);
  color: #e8fbff;
  font-size: 0.82rem;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.45);
  white-space: nowrap;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: #f7fbff;
  color: var(--ink);
  border-radius: 999px;
  padding: 7px 12px;
  font: 500 0.82rem var(--font-body);
  line-height: 1.2;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, opacity 0.15s ease;
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(145deg, #14958b, #0d6d66);
  border-color: transparent;
  color: var(--accent-ink);
}

.btn-ghost {
  background: transparent;
}

.btn-file {
  display: inline-flex;
  align-items: center;
}

.result-panel {
  padding: 18px;
}

.field-label {
  display: block;
  font-size: 0.84rem;
  color: var(--muted);
  margin-bottom: 8px;
}

.vin-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: stretch;
}

#vinInput {
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 10px;
  font-size: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-family: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;
  background: #fff;
  color: var(--ink);
}

.vin-row .btn {
  padding: 10px 12px;
  font-size: 0.86rem;
  white-space: nowrap;
}

@media (max-width: 420px) {
  #vinInput {
    font-size: 1rem;
    letter-spacing: 0.03em;
    padding: 11px 8px;
  }

  .vin-row {
    gap: 6px;
  }

  .vin-row .btn {
    padding: 10px 10px;
    font-size: 0.8rem;
  }
}

.hint {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.45;
}

.hint.error {
  color: #a1331d;
}

.hint.ok {
  color: var(--ok);
}

.vehicle-card {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.1), rgba(37, 99, 235, 0.08));
  border: 1px solid var(--line);
}

.vehicle-card strong {
  display: block;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.vehicle-card span {
  color: var(--muted);
  font-size: 0.88rem;
  font-family: var(--font-body);
}

.parts-wrap {
  margin-top: 18px;
}

.parts-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 10px;
}

.parts-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.1rem;
}

.parts-head span {
  color: var(--muted);
  font-size: 0.86rem;
}

.parts-list {
  display: grid;
  gap: 10px;
}

.part-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 12px;
  padding: 12px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.part-item img {
  width: 72px;
  height: 72px;
  object-fit: contain;
  border-radius: 10px;
  background: #e8eef5;
}

.part-item h3 {
  margin: 0 0 4px;
  font-size: 0.98rem;
}

.part-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.4;
}

.part-code {
  display: inline-block;
  margin-top: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(15, 118, 110, 0.12);
  color: #0b5f59;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.part-params {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.part-params li {
  margin: 0;
  padding: 4px 8px;
  border-radius: 8px;
  background: rgba(18, 32, 51, 0.06);
  color: var(--ink);
  font-size: 0.78rem;
  line-height: 1.35;
}

@media (max-width: 860px) {
  .stage {
    grid-template-columns: 1fr;
  }

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

  .guide-text {
    white-space: normal;
    text-align: center;
    width: 86%;
  }
}