:root {
  --bg: #f3efe6;
  --bg-deep: #d5e0d5;
  --panel: rgba(255, 251, 245, 0.9);
  --panel-strong: rgba(255, 248, 238, 0.96);
  --line: rgba(60, 76, 72, 0.14);
  --text: #1f2a2a;
  --muted: #5f6e69;
  --accent: #b5472f;
  --accent-deep: #6d261a;
  --water: #3b6d7f;
  --ok: #2b6a4f;
  --warn: #8b5e1c;
  --shadow: 0 18px 40px rgba(39, 43, 42, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --font-display: "Avenir Next", "PingFang SC", "Noto Serif SC",
    "Source Han Serif SC", serif;
  --font-body: "IBM Plex Sans", "PingFang SC", "Helvetica Neue", sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", "Menlo", monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(72, 113, 140, 0.18), transparent 28%),
    linear-gradient(160deg, var(--bg) 0%, #f8f3ea 42%, var(--bg-deep) 100%);
  min-height: 100vh;
}

button,
input,
select,
textarea {
  font: inherit;
}

.page-shell {
  width: min(1440px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.hero {
  margin-bottom: 24px;
}

.hero-copy {
  background: linear-gradient(135deg, rgba(255, 246, 232, 0.96), rgba(242, 249, 246, 0.88));
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  padding: 32px;
}

.eyebrow {
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  font-size: 12px;
}

.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.04;
}

.hero-text {
  margin: 16px 0 0;
  max-width: 58ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(320px, 0.95fr) minmax(320px, 0.9fr) minmax(360px, 1.05fr);
  gap: 20px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  padding: 24px;
  backdrop-filter: blur(14px);
}

.section-title {
  margin-bottom: 18px;
}

.section-title h2,
.raw-header h3 {
  margin: 0;
  font-size: 20px;
  font-family: var(--font-display);
}

.section-title p,
.raw-header p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.field,
.field-row {
  display: grid;
  gap: 10px;
}

.field {
  margin-bottom: 16px;
}

.field span {
  font-size: 13px;
  color: var(--muted);
}

.field-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid rgba(58, 71, 67, 0.18);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.75);
  padding: 14px 16px;
  color: var(--text);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

textarea {
  resize: vertical;
  min-height: 260px;
  line-height: 1.65;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: rgba(59, 109, 127, 0.5);
  box-shadow: 0 0 0 4px rgba(59, 109, 127, 0.12);
}

.button-row {
  display: flex;
  gap: 12px;
  margin-bottom: 18px;
}

button {
  cursor: pointer;
  border: 0;
  border-radius: 999px;
  padding: 13px 18px;
  transition: transform 180ms ease, opacity 180ms ease, box-shadow 180ms ease;
}

button:hover {
  transform: translateY(-1px);
}

button:disabled {
  cursor: wait;
  opacity: 0.72;
  transform: none;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: #fff7f1;
  box-shadow: 0 14px 30px rgba(109, 38, 26, 0.24);
}

.primary-button.is-loading {
  position: relative;
  overflow: hidden;
}

.primary-button.is-loading::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    115deg,
    transparent 0%,
    rgba(255, 255, 255, 0.14) 35%,
    rgba(255, 255, 255, 0.34) 50%,
    rgba(255, 255, 255, 0.14) 65%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: sweep 1.2s linear infinite;
}

.ghost-button {
  background: rgba(255, 255, 255, 0.7);
  color: var(--text);
  border: 1px solid rgba(55, 66, 63, 0.16);
}

.ghost-button.small {
  padding: 9px 14px;
  font-size: 13px;
}

.status-bar {
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.55;
}

.status-bar.idle {
  background: rgba(59, 109, 127, 0.09);
  color: var(--water);
}

.status-bar.loading {
  background: rgba(181, 71, 47, 0.1);
  color: var(--accent-deep);
}

.status-bar.success {
  background: rgba(43, 106, 79, 0.11);
  color: var(--ok);
}

.status-bar.error {
  background: rgba(139, 94, 28, 0.14);
  color: var(--warn);
}

.preview-panel {
  display: flex;
  flex-direction: column;
}

.preview-frame {
  position: relative;
  overflow: hidden;
  min-height: 520px;
  border-radius: calc(var(--radius-xl) - 6px);
  background:
    linear-gradient(145deg, rgba(243, 234, 220, 0.84), rgba(216, 229, 225, 0.7));
  border: 1px solid rgba(57, 74, 70, 0.12);
}

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

.loading-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 10px;
  background: rgba(28, 38, 37, 0.62);
  color: #fff7ef;
  text-align: center;
  padding: 24px;
  opacity: 1;
  transition: opacity 180ms ease;
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-overlay strong {
  font-size: 28px;
  font-family: var(--font-display);
}

.loading-overlay p {
  margin: 0;
  max-width: 26ch;
  line-height: 1.65;
  color: rgba(255, 247, 239, 0.82);
}

.loading-spinner {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 4px solid rgba(255, 247, 239, 0.24);
  border-top-color: #fff7ef;
  animation: spin 0.95s linear infinite;
}

.image-meta {
  margin-top: 14px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 16px;
}

.secondary-grid .result-card strong {
  font-size: 21px;
}

.result-card {
  background: rgba(255, 255, 255, 0.68);
  border: 1px solid rgba(56, 72, 68, 0.12);
  border-radius: var(--radius-lg);
  padding: 18px;
}

.result-panel.is-loading .result-card strong,
.result-panel.is-loading .detail-block p,
.result-panel.is-loading .evidence-list,
.result-panel.is-loading .raw-output {
  opacity: 0.55;
}

.result-card.emphasis {
  background: linear-gradient(145deg, rgba(181, 71, 47, 0.12), rgba(251, 247, 239, 0.94));
}

.result-label,
.detail-title {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 8px;
}

.result-card strong {
  font-size: 28px;
  font-family: var(--font-display);
}

.details-grid {
  display: grid;
  gap: 12px;
}

.detail-block {
  background: rgba(255, 255, 255, 0.66);
  border: 1px solid rgba(56, 72, 68, 0.1);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
}

.detail-block p {
  margin: 0;
  line-height: 1.65;
}

.evidence-list {
  margin: 0;
  padding-left: 20px;
  line-height: 1.7;
}

.raw-panel {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(55, 66, 63, 0.12);
}

.raw-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.raw-output {
  margin: 0;
  font-family: var(--font-mono);
  background: rgba(21, 31, 31, 0.92);
  color: #d6efe5;
  padding: 18px;
  border-radius: var(--radius-lg);
  max-height: 320px;
  overflow: auto;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

.raw-output.collapsed {
  display: none;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes sweep {
  to {
    transform: translateX(100%);
  }
}

@media (max-width: 1180px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .preview-frame {
    min-height: 420px;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100vw - 20px, 100%);
    padding-top: 12px;
  }

  .hero-copy,
  .panel {
    padding: 20px;
  }

  .field-row,
  .result-grid,
  .button-row {
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .preview-frame {
    min-height: 320px;
  }
}