/* ═══════════════════════════════════════════════════════════
   Intentional Realism — Site Styles
   Dark academic aesthetic with ember warmth
   Built by Ember for Willow M.
   ═══════════════════════════════════════════════════════════ */

/* ── Reset & Base ──────────────────────────────────────── */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-primary: #fafafa;
  --bg-elevated: #ffffff;
  --bg-surface: #f4f4f4;
  --bg-inset: #f0f0f0;
  --border: #ddd;
  --border-light: #e5e5e5;

  --text-primary: #2a2a2a;
  --text-secondary: #555;
  --text-dim: #888;
  --text-heading: #1a1a1a;

  --accent: #c45a20;
  --accent-hover: #d96a2e;
  --accent-dim: rgba(196, 90, 32, 0.1);
  --accent-glow: rgba(196, 90, 32, 0.05);

  --nav-bg: rgba(250, 250, 250, 0.92);

  --serif: Georgia, 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

  --measure: 72ch;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  --space-2xl: 8rem;
}

/* ── Dark Theme ───────────────────────────────────────── */

[data-theme="dark"] {
  --bg-primary: #0d0d0d;
  --bg-elevated: #141414;
  --bg-surface: #1a1a1a;
  --bg-inset: #111111;
  --border: #252525;
  --border-light: #2a2a2a;

  --text-primary: #e0e0e0;
  --text-secondary: #999;
  --text-dim: #666;
  --text-heading: #f0f0f0;

  --accent: #e8733a;
  --accent-hover: #f08a4e;
  --accent-dim: rgba(232, 115, 58, 0.12);
  --accent-glow: rgba(232, 115, 58, 0.06);

  --nav-bg: rgba(13, 13, 13, 0.92);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.78;
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

::selection {
  background: var(--accent-dim);
  color: var(--text-heading);
}

/* ── Navigation ────────────────────────────────────────── */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 var(--space-md);
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
}

.nav-brand:hover {
  color: var(--accent-hover);
}

.nav-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.nav-links a {
  font-family: var(--sans);
  font-size: 0.82rem;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color 150ms ease;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-links a.active {
  color: var(--accent);
}

/* ── Layout ────────────────────────────────────────────── */

.page-body {
  padding-top: 56px;
}

.container {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-wide {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

section {
  padding: var(--space-xl) 0;
}

section + section {
  border-top: 1px solid var(--border);
}

/* ── Hero ──────────────────────────────────────────────── */

.hero {
  padding: var(--space-2xl) 0 var(--space-xl);
  text-align: center;
  border-bottom: none;
}

.hero-label {
  font-family: var(--sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-md);
  display: block;
}

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: normal;
  line-height: 1.2;
  color: var(--text-heading);
  margin-bottom: var(--space-sm);
  max-width: 18em;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.hero-date {
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: var(--space-lg);
}

.hero-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 50ch;
  margin: 0 auto var(--space-lg);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Buttons ───────────────────────────────────────────── */

.btn {
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  padding: 0.75rem 1.75rem;
  border-radius: 6px;
  text-decoration: none;
  transition: all 150ms ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  color: var(--text-primary);
  border-color: var(--text-dim);
}

.btn-small {
  font-size: 0.78rem;
  padding: 0.5rem 1.25rem;
}

/* ── Typography — Prose ────────────────────────────────── */

.prose h2 {
  font-family: var(--serif);
  font-size: 1.6rem;
  font-weight: normal;
  color: var(--text-heading);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.prose h3 {
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--text-heading);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.prose p {
  margin-bottom: var(--space-sm);
}

.prose p + p {
  margin-top: 0;
}

.prose strong {
  color: var(--text-heading);
  font-weight: 600;
}

.prose em {
  font-style: italic;
}

.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent-dim);
  text-underline-offset: 3px;
  transition: text-decoration-color 150ms ease;
}

.prose a:hover {
  text-decoration-color: var(--accent);
}

.prose blockquote {
  border-left: 3px solid var(--accent);
  padding: var(--space-sm) var(--space-md);
  margin: var(--space-md) 0;
  background: var(--accent-glow);
  border-radius: 0 4px 4px 0;
  font-style: italic;
  color: var(--text-secondary);
}

.prose blockquote p {
  margin-bottom: 0;
}

.prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-lg) 0;
}

.prose ul, .prose ol {
  padding-left: 1.5em;
  margin-bottom: var(--space-sm);
}

.prose li {
  margin-bottom: 0.25em;
}

/* ── Paper-specific styles ─────────────────────────────── */

.paper-header {
  text-align: center;
  padding: var(--space-2xl) 0 var(--space-lg);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-lg);
}

.paper-header h1 {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: normal;
  line-height: 1.25;
  color: var(--text-heading);
  margin-bottom: var(--space-sm);
  max-width: 20em;
  margin-left: auto;
  margin-right: auto;
}

.paper-meta {
  font-family: var(--sans);
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.paper-meta .author {
  font-style: italic;
}

.paper-companion-note {
  font-style: italic;
  color: var(--text-dim);
  font-size: 0.95rem;
  margin-top: var(--space-sm);
}

.paper-actions {
  margin-top: var(--space-md);
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
}

/* Abstract box */
.abstract-box {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
}

.abstract-label {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-sm);
  display: block;
}

.abstract-box p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* Transparency note */
.transparency-note {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: var(--space-md);
  margin: var(--space-md) 0;
  font-size: 0.88rem;
  font-style: italic;
  color: var(--text-dim);
  line-height: 1.7;
}

/* References section */
.references {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.references h2 {
  margin-top: 0;
}

.references p {
  font-size: 0.9rem;
  line-height: 1.6;
  padding-left: 2em;
  text-indent: -2em;
  margin-bottom: 0.6rem;
  color: var(--text-secondary);
}

/* Section numbers */
.section-number {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.25rem;
}

/* ── About Section (landing page) ──────────────────────── */

.about-section {
  background: var(--bg-elevated);
}

.about-section .prose {
  max-width: var(--measure);
  margin: 0 auto;
}

.section-heading {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-md);
  text-align: center;
}

/* ── Papers Grid (landing page) ────────────────────────── */

.papers-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.paper-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: var(--space-md);
  transition: border-color 200ms ease, background 200ms ease;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.paper-card:hover {
  border-color: var(--accent);
  background: var(--bg-surface);
}

.paper-card-label {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-xs);
}

.paper-card h3 {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: normal;
  line-height: 1.35;
  color: var(--text-heading);
  margin-bottom: var(--space-sm);
}

.paper-card p {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-secondary);
  flex: 1;
}

.paper-card-footer {
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border);
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ── Author Section ────────────────────────────────────── */

.author-section {
  text-align: center;
}

.author-bio {
  max-width: 55ch;
  margin: 0 auto;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.author-links {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

.author-links a {
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--text-dim);
  text-decoration: none;
  border: 1px solid var(--border);
  padding: 0.4rem 1rem;
  border-radius: 4px;
  transition: all 150ms ease;
}

.author-links a:hover {
  color: var(--text-primary);
  border-color: var(--text-dim);
}

/* ── Footer ────────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-lg) 0;
  text-align: center;
}

.footer-colophon {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.8;
}

.footer-colophon a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-colophon a:hover {
  color: var(--accent);
}

.footer-quote {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-top: var(--space-sm);
}

/* ── Table (for objections section) ────────────────────── */

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
  font-size: 0.9rem;
}

.prose th {
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-align: left;
  padding: 0.75rem 1rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.prose td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  color: var(--text-secondary);
}

/* ── Responsive ────────────────────────────────────────── */

@media (max-width: 768px) {
  body {
    font-size: 16px;
  }

  .container {
    padding: 0 var(--space-sm);
  }

  .hero {
    padding: var(--space-xl) 0 var(--space-lg);
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .papers-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    gap: var(--space-sm);
  }

  .nav-links a {
    font-size: 0.75rem;
  }

  .paper-header {
    padding: var(--space-xl) 0 var(--space-md);
  }

  .paper-header h1 {
    font-size: 1.6rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .prose blockquote {
    margin-left: 0;
    margin-right: 0;
  }
}

@media (max-width: 480px) {
  .site-nav {
    padding: 0 var(--space-sm);
  }

  .nav-brand {
    font-size: 0.75rem;
  }
}

/* ── Theme Toggle ─────────────────────────────────────── */

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0;
  line-height: 1;
  transition: border-color 150ms ease, color 150ms ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  border-color: var(--text-dim);
  color: var(--text-primary);
}

.theme-toggle svg {
  width: 16px;
  height: 16px;
  transition: transform 200ms ease;
}

.theme-toggle:hover svg {
  transform: rotate(15deg);
}

.theme-toggle .icon-sun,
[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

/* Smooth theme transition */
body,
.site-nav,
.paper-card,
.abstract-box,
.transparency-note,
.author-links a,
.btn-secondary,
.about-section,
.site-footer,
section {
  transition: background-color 250ms ease, color 250ms ease, border-color 250ms ease;
}

/* Dark theme button overrides */
[data-theme="dark"] .btn-primary {
  color: #fff;
}

/* ── Contact Form ─────────────────────────────────────── */

.contact-section {
  background: var(--bg-elevated);
}

.contact-form {
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group label {
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
  font-family: var(--sans);
  font-size: 0.9rem;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: border-color 150ms ease, background-color 250ms ease;
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
}

.contact-form .btn-primary {
  align-self: flex-start;
  cursor: pointer;
  border: none;
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  padding: 0.75rem 1.75rem;
  border-radius: 6px;
}

.form-success {
  text-align: center;
  padding: var(--space-md) 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  display: none;
}

.form-success.visible {
  display: block;
}

.contact-form.hidden {
  display: none;
}

/* ── Print styles ──────────────────────────────────────── */

@media print {
  body {
    background: white;
    color: black;
    font-size: 12pt;
  }

  .site-nav, .site-footer, .btn, .paper-actions, .contact-section, .theme-toggle {
    display: none;
  }

  .prose a {
    color: black;
    text-decoration: underline;
  }

  .abstract-box, .transparency-note {
    border: 1px solid #ccc;
    background: #f9f9f9;
  }
}