:root {
  --bg: #f3efe3;
  --bg-glow: radial-gradient(circle at top left, rgba(255, 226, 162, 0.45), transparent 34%),
    radial-gradient(circle at 90% 20%, rgba(31, 113, 92, 0.14), transparent 28%),
    linear-gradient(180deg, #f7f2e7 0%, #efe9da 100%);
  --surface: rgba(255, 252, 246, 0.92);
  --surface-strong: rgba(255, 255, 255, 0.98);
  --surface-border: rgba(30, 59, 48, 0.12);
  --text: #1d2e2a;
  --muted: #596964;
  --accent: #0d6b57;
  --accent-strong: #084d40;
  --accent-soft: rgba(13, 107, 87, 0.12);
  --warning: #9a4a15;
  --warning-soft: rgba(154, 74, 21, 0.14);
  --danger: #9b2329;
  --danger-soft: rgba(155, 35, 41, 0.14);
  --success: #1f6a3f;
  --success-soft: rgba(31, 106, 63, 0.14);
  --shadow: 0 22px 60px rgba(44, 48, 36, 0.14);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-glow);
  color: var(--text);
  font-family: "Avenir Next", "Trebuchet MS", "Segoe UI", sans-serif;
}

code,
pre,
textarea,
input,
button {
  font: inherit;
}

.page-shell {
  width: min(1280px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 64px;
}

.hero,
.dashboard,
.results {
  animation: rise-in 700ms ease both;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 420px);
  gap: 24px;
  align-items: stretch;
  margin-bottom: 28px;
}

.hero-copy,
.hero-panel,
.surface-elevated {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-copy {
  padding: 36px;
}

.hero-panel {
  padding: 24px;
  display: grid;
  gap: 14px;
  align-content: center;
  position: relative;
  overflow: hidden;
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: -40% auto auto 45%;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(13, 107, 87, 0.18), transparent 68%);
  pointer-events: none;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  line-height: 1.08;
}

h1 {
  font-size: clamp(2.4rem, 4vw, 4.5rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.65rem, 2vw, 2.4rem);
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 14px;
}

p {
  line-height: 1.6;
}

.hero-text {
  margin: 18px 0 0;
  max-width: 60ch;
  color: var(--muted);
  font-size: 1.02rem;
}

.hero-stat {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(13, 107, 87, 0.1);
  display: grid;
  gap: 6px;
}

.hero-stat-value {
  font-family: "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  font-size: 1.2rem;
  font-weight: 700;
}

.hero-stat-label {
  color: var(--muted);
  font-size: 0.95rem;
}

.dashboard {
  display: grid;
  gap: 24px;
}

.dashboard-single {
  grid-template-columns: 1fr;
}

.panel {
  padding: 28px;
}

.panel-heading {
  margin-bottom: 22px;
}

.panel-heading p:last-child {
  margin: 10px 0 0;
  color: var(--muted);
}

.upload-form {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  font-weight: 700;
  font-size: 0.96rem;
}

.field small {
  color: var(--muted);
  font-size: 0.9rem;
}

input[type="text"],
input[type="file"] {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(34, 57, 50, 0.16);
  background: var(--surface-strong);
  color: var(--text);
  padding: 14px 16px;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

input[type="file"] {
  padding: 12px 14px;
}

input:focus {
  outline: none;
  border-color: rgba(13, 107, 87, 0.5);
  box-shadow: 0 0 0 4px rgba(13, 107, 87, 0.12);
}

.file-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 14px;
}

.file-chip,
.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(13, 107, 87, 0.12);
  color: var(--text);
  font-size: 0.9rem;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 14px 22px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

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

.button:disabled {
  opacity: 0.6;
  cursor: progress;
  transform: none;
}

.button-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #22856f 100%);
  color: #fff;
  box-shadow: 0 14px 24px rgba(13, 107, 87, 0.24);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.92);
  color: var(--text);
  border: 1px solid rgba(34, 57, 50, 0.14);
}

.status-card {
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  line-height: 1.5;
  font-weight: 600;
}

.status-idle {
  background: rgba(255, 255, 255, 0.82);
  border-color: rgba(34, 57, 50, 0.08);
}

.status-loading {
  background: rgba(13, 107, 87, 0.08);
  border-color: rgba(13, 107, 87, 0.2);
}

.status-success {
  background: var(--success-soft);
  border-color: rgba(31, 106, 63, 0.2);
  color: #1d5a36;
}

.status-warning {
  background: var(--warning-soft);
  border-color: rgba(154, 74, 21, 0.2);
  color: #7b3b12;
}

.status-error {
  background: var(--danger-soft);
  border-color: rgba(155, 35, 41, 0.22);
  color: #7d1e24;
}

.notes-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.notes-card {
  padding: 18px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(255, 250, 242, 0.95), rgba(255, 255, 255, 0.85));
  border: 1px solid rgba(154, 74, 21, 0.12);
}

.notes-card ul {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.notes-card li + li {
  margin-top: 10px;
}

.results {
  margin-top: 28px;
  display: grid;
  gap: 22px;
}

.results.is-hidden {
  display: none;
}

.results-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.summary-card {
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  box-shadow: var(--shadow);
  display: grid;
  gap: 6px;
}

.summary-card strong {
  font-family: "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  font-size: 2rem;
  line-height: 1;
}

.summary-card span {
  color: var(--muted);
  font-size: 0.92rem;
}

.result-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.result-columns-wide {
  align-items: stretch;
}

.result-card {
  padding: 24px;
}

.detail-list {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 12px 16px;
  margin: 0;
}

.detail-list dt {
  color: var(--muted);
  font-weight: 700;
}

.detail-list dd {
  margin: 0;
  word-break: break-word;
}

.tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-success {
  background: var(--success-soft);
  border-color: rgba(31, 106, 63, 0.16);
}

.tag-warning {
  background: var(--warning-soft);
  border-color: rgba(154, 74, 21, 0.16);
}

.tag-error {
  background: var(--danger-soft);
  border-color: rgba(155, 35, 41, 0.16);
}

.tag-muted {
  background: rgba(66, 76, 72, 0.08);
  border-color: rgba(66, 76, 72, 0.08);
}

.question-preview {
  display: grid;
  gap: 14px;
  max-height: 560px;
  overflow: auto;
  padding-right: 4px;
}

.question-card {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(34, 57, 50, 0.08);
}

.question-card h4 {
  margin: 0 0 10px;
  font-size: 1.02rem;
  font-family: "Avenir Next", "Trebuchet MS", "Segoe UI", sans-serif;
}

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

.question-card ul {
  margin: 12px 0 0;
  padding-left: 18px;
}

.question-card .image-note {
  display: inline-flex;
  margin-top: 12px;
}

.tab-strip {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.tab-button {
  padding: 10px 14px;
  border: 1px solid rgba(34, 57, 50, 0.12);
  background: rgba(255, 255, 255, 0.82);
  border-radius: 999px;
  cursor: pointer;
  font-weight: 700;
}

.tab-button.is-active {
  background: var(--accent-soft);
  color: var(--accent-strong);
  border-color: rgba(13, 107, 87, 0.18);
}

.preview-stack {
  min-height: 520px;
}

.tab-pane {
  display: none;
}

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

#html-preview {
  width: 100%;
  min-height: 520px;
  border: 1px solid rgba(34, 57, 50, 0.12);
  border-radius: var(--radius-md);
  background: #fff;
}

.code-block {
  margin: 0;
  padding: 18px;
  min-height: 520px;
  overflow: auto;
  border-radius: var(--radius-md);
  background: #182321;
  color: #edf4f2;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92rem;
  line-height: 1.55;
}

.empty-state {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(66, 76, 72, 0.06);
  color: var(--muted);
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1120px) {
  .hero,
  .summary-grid,
  .result-columns,
  .notes-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 720px) {
  .page-shell {
    width: min(100vw - 20px, 100%);
    padding-top: 18px;
  }

  .hero-copy,
  .hero-panel,
  .panel,
  .result-card,
  .summary-card {
    padding: 20px;
    border-radius: 24px;
  }

  h1 {
    font-size: 2.35rem;
  }

  .detail-list {
    grid-template-columns: 1fr;
  }

  .action-row {
    width: 100%;
  }

  .button {
    width: 100%;
    justify-content: center;
  }
}