:root {
  color-scheme: light dark;
  --bg: #f5f6f4;
  --panel: #ffffff;
  --panel-subtle: #f0f2ef;
  --text: #1d211f;
  --muted: #5e6964;
  --border: #d7ddd8;
  --accent: #0f766e;
  --accent-strong: #0b5f59;
  --danger: #b42318;
  --warning: #8a5a00;
  --shadow: 0 12px 32px rgba(29, 33, 31, 0.08);
  --radius: 8px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111513;
    --panel: #1b211f;
    --panel-subtle: #222a27;
    --text: #eef3ef;
    --muted: #a7b3ad;
    --border: #34413c;
    --accent: #4db6ac;
    --accent-strong: #81d8d0;
    --danger: #ffb4ab;
    --warning: #f4c46b;
    --shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
}

button,
input {
  font: inherit;
}

a {
  color: var(--accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-strong);
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 50%, transparent);
  outline-offset: 3px;
}

.app-shell {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: var(--space-6) 0 var(--space-7);
}

.intro {
  display: grid;
  gap: var(--space-5);
  align-items: end;
  margin-bottom: var(--space-5);
}

.utility-label {
  margin: 0 0 var(--space-2);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: var(--space-3);
  font-size: clamp(2.1rem, 7vw, 4rem);
  line-height: 1.05;
  font-weight: 760;
}

h2 {
  margin-bottom: var(--space-1);
  font-size: 1.25rem;
  line-height: 1.25;
}

h3 {
  margin-bottom: var(--space-1);
  font-size: 1.1rem;
  line-height: 1.3;
}

h4 {
  margin-bottom: var(--space-3);
  font-size: 0.95rem;
  line-height: 1.3;
}

.intro-copy {
  max-width: 64ch;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.privacy-note {
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--muted);
}

.privacy-note strong {
  color: var(--text);
}

.upload-panel,
.result-card,
.empty-state {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.upload-panel {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-5);
}

.section-heading {
  display: grid;
  gap: var(--space-1);
}

.section-heading p {
  margin-bottom: 0;
  color: var(--muted);
}

.drop-zone {
  display: grid;
  place-items: center;
  gap: var(--space-2);
  min-height: 14rem;
  padding: var(--space-6);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--panel-subtle);
  color: var(--muted);
  text-align: center;
  cursor: pointer;
  transition:
    border-color 160ms ease,
    background-color 160ms ease,
    color 160ms ease;
}

.drop-zone:hover,
.drop-zone.is-dragging {
  border-color: var(--accent);
  color: var(--text);
}

.drop-zone input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.drop-zone-icon {
  width: 2.25rem;
  height: 2.25rem;
  border: 2px solid var(--accent);
  border-radius: 50%;
  position: relative;
}

.drop-zone-icon::before,
.drop-zone-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--accent);
  transform: translate(-50%, -50%);
}

.drop-zone-icon::before {
  width: 1rem;
  height: 2px;
}

.drop-zone-icon::after {
  width: 2px;
  height: 1rem;
}

.drop-zone-title {
  color: var(--text);
  font-size: 1.08rem;
  font-weight: 700;
}

.drop-zone-copy {
  max-width: 34rem;
}

.controls-row {
  display: grid;
  gap: var(--space-3);
  align-items: center;
}

.secondary-button,
.map-link {
  min-height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--text);
  font-size: 0.94rem;
  font-weight: 700;
  line-height: 1;
}

.secondary-button {
  justify-self: start;
  padding: 0 var(--space-4);
  cursor: pointer;
}

.secondary-button:hover {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.status-message {
  min-height: 1.5rem;
  margin-bottom: 0;
  color: var(--muted);
}

.status-message.is-error {
  color: var(--danger);
}

.status-message.is-warning {
  color: var(--warning);
}

.results-section {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.empty-state {
  padding: var(--space-5);
  color: var(--muted);
}

.empty-state p {
  margin-bottom: 0;
}

.empty-state.is-hidden {
  display: none;
}

.results-grid {
  display: grid;
  gap: var(--space-4);
}

.result-card {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-4);
}

.result-header {
  display: grid;
  gap: var(--space-1);
}

.file-name {
  overflow-wrap: anywhere;
}

.file-meta {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.preview-frame {
  display: grid;
  place-items: center;
  overflow: hidden;
  min-height: 11rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel-subtle);
}

.preview-frame img {
  display: block;
  width: 100%;
  max-height: 22rem;
  object-fit: contain;
}

.summary-list,
.metadata-list {
  display: grid;
  gap: 0;
  margin: 0;
}

.summary-list div,
.metadata-list div {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--border);
}

.summary-list div:first-child,
.metadata-list div:first-child {
  border-top: 1px solid var(--border);
}

dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

dd {
  margin: 0;
  min-width: 0;
  overflow-wrap: anywhere;
}

.metadata-panel {
  display: grid;
  gap: var(--space-4);
}

.metadata-grid {
  display: grid;
  gap: var(--space-4);
}

.metadata-group {
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel-subtle);
}

.message {
  margin: 0;
  color: var(--muted);
}

.message.is-error {
  color: var(--danger);
}

.message.is-warning {
  color: var(--warning);
}

.map-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.map-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-3);
  text-decoration: none;
}

.raw-details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel-subtle);
}

.raw-details summary {
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  font-weight: 700;
}

.raw-json {
  max-height: 24rem;
  overflow: auto;
  margin: 0;
  padding: 0 var(--space-4) var(--space-4);
  color: var(--text);
  font-size: 0.84rem;
  line-height: 1.45;
  white-space: pre-wrap;
}

@media (min-width: 720px) {
  .intro {
    grid-template-columns: minmax(0, 1fr) minmax(17rem, 24rem);
  }

  .controls-row {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .result-card {
    grid-template-columns: minmax(14rem, 0.7fr) minmax(0, 1fr);
    align-items: start;
  }

  .result-header,
  .summary-list {
    grid-column: 1 / -1;
  }

  .metadata-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .results-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .result-card {
    grid-template-columns: 1fr;
  }

  .result-header,
  .summary-list {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}