:root {
  --bg: #f5efe4;
  --bg-accent: #eadcc6;
  --panel: rgba(255, 251, 245, 0.88);
  --line: rgba(96, 74, 44, 0.16);
  --ink: #1f1a14;
  --muted: #655949;
  --brand: #9e4f1b;
  --brand-deep: #6d3410;
  --danger: #a53030;
  --success: #2f6a4a;
  --shadow: 0 22px 60px rgba(78, 52, 25, 0.12);
  --radius: 22px;
  --font-display: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, serif;
  --font-body: "Avenir Next", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.85), transparent 32%),
    linear-gradient(145deg, var(--bg), var(--bg-accent));
  color: var(--ink);
  font-family: var(--font-body);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.16) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.25;
  pointer-events: none;
}

.page-shell,
.login-shell {
  position: relative;
  z-index: 1;
}

.page-shell {
  padding: 24px;
}

.login-shell {
  display: grid;
  place-items: center;
  padding: 24px;
}

.hero,
.panel,
.auth-card {
  background: var(--panel);
  backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero {
  border-radius: 28px;
  padding: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 0 auto 20px;
  max-width: 1200px;
}

.hero h1,
.auth-card h1,
.panel h2,
.reader-metadata h3 {
  font-family: var(--font-display);
  margin: 0;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.03;
  max-width: 12ch;
}

.auth-card {
  border-radius: 30px;
  padding: 32px;
  width: min(100%, 520px);
}

.content-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.panel {
  border-radius: var(--radius);
  padding: 24px;
}

.panel-wide {
  grid-column: 1 / -1;
}

.panel-header,
.reader-metadata,
.inline-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.stack-form {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.xpath-disclosure {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.48);
  overflow: hidden;
}

.xpath-disclosure summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  font-weight: 700;
  color: var(--ink);
}

.xpath-disclosure summary::-webkit-details-marker {
  display: none;
}

.xpath-disclosure summary::after {
  content: "+";
  font-size: 1.15rem;
  color: var(--brand-deep);
}

.xpath-disclosure[open] summary::after {
  content: "−";
}

.xpath-summary-note {
  padding-right: 10px;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--muted);
}

.xpath-disclosure-body {
  display: grid;
  gap: 14px;
  padding: 0 18px 18px;
  border-top: 1px solid var(--line);
}

#next-xpath-field.hidden {
  display: none;
}

label {
  display: grid;
  gap: 8px;
}

label span,
.label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--muted);
}

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

input,
textarea,
select {
  width: 100%;
  border-radius: 16px;
  border: 1px solid rgba(96, 74, 44, 0.22);
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--ink);
}

textarea {
  resize: vertical;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  cursor: pointer;
  transition: transform 140ms ease, opacity 140ms ease, background 140ms ease;
}

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

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  transform: none;
}

.primary-button {
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  color: #fffaf4;
}

.secondary-button {
  background: rgba(96, 74, 44, 0.1);
  color: var(--ink);
}

.ghost-button {
  background: transparent;
  color: var(--brand-deep);
  border: 1px solid rgba(109, 52, 16, 0.2);
}

.pill {
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 700;
  background: rgba(47, 106, 74, 0.14);
  color: var(--success);
}

.pill.neutral {
  background: rgba(96, 74, 44, 0.12);
  color: var(--muted);
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand-deep);
}

.muted {
  color: var(--muted);
}

.reader-metadata {
  margin: 20px 0 18px;
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.55);
}

.voice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.speech-controls {
  margin-top: 18px;
  flex-wrap: wrap;
}

.timeline-shell {
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line);
}

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

.timeline-value {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--brand-deep);
}

input[type="range"] {
  accent-color: var(--brand);
}

.timeline-shell input[type="range"] {
  padding: 0;
  background: transparent;
}

.message {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(47, 106, 74, 0.18);
  background: rgba(47, 106, 74, 0.1);
  color: var(--success);
}

.message.error {
  border-color: rgba(165, 48, 48, 0.22);
  background: rgba(165, 48, 48, 0.08);
  color: var(--danger);
}

.hidden {
  display: none;
}

.article-content {
  margin-top: 18px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  padding: 22px;
  white-space: pre-wrap;
  line-height: 1.65;
  min-height: 300px;
  max-height: 60vh;
  overflow: auto;
}

.small-note {
  font-size: 0.92rem;
}

@media (max-width: 860px) {
  .page-shell {
    padding: 16px;
  }

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

  .hero,
  .panel-header,
  .reader-metadata,
  .inline-controls,
  .voice-grid,
  .content-grid {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .content-grid {
    display: grid;
  }

  .hero h1 {
    max-width: none;
  }
}