/* Shared lesson styles — used by TEMPLATE.html, lesson pages, and index.html */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700&family=Roboto+Mono:wght@400;500&display=swap');

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

:root {
  /* ── Light mode (default) — Anthropic-inspired warm white ── */
  --bg: #faf5f0;
  --bg-raised: #f0ebe5;
  --surface: rgba(0, 0, 0, 0.035);
  --surface-hover: rgba(0, 0, 0, 0.06);
  --border: rgba(0, 0, 0, 0.1);
  --border-hover: rgba(196, 113, 62, 0.5);
  --text: #1a1816;
  --text-muted: rgba(61, 53, 48, 0.65);
  --accent: #c4713e;
  --accent-soft: rgba(196, 113, 62, 0.1);
  --accent-glow: rgba(196, 113, 62, 0.2);
  --green: #16a34a;
  --code-bg: #f3ede6;
  --tag-bg: rgba(196, 113, 62, 0.1);
  --tag-border: rgba(196, 113, 62, 0.22);
  --grain-opacity: 0.022;
  --shadow-card: rgba(0, 0, 0, 0.08);
  --font-heading: 'Manrope', sans-serif;
  --font-mono: 'Roboto Mono', monospace;
  --font-body: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Dark mode ── */
[data-theme="dark"] {
  --bg: #1e1b18;
  --bg-raised: #272320;
  --surface: rgba(255, 255, 255, 0.055);
  --surface-hover: rgba(255, 255, 255, 0.09);
  --border: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(212, 132, 90, 0.5);
  --text: #f5f0e8;
  --text-muted: rgba(245, 240, 232, 0.65);
  --accent: #d4845a;
  --accent-soft: rgba(212, 132, 90, 0.14);
  --accent-glow: rgba(212, 132, 90, 0.25);
  --green: #22c55e;
  --code-bg: #1a1714;
  --tag-bg: rgba(212, 132, 90, 0.12);
  --tag-border: rgba(212, 132, 90, 0.22);
  --grain-opacity: 0.03;
  --shadow-card: rgba(0, 0, 0, 0.2);
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: var(--grain-opacity);
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 9999;
}

.container {
  max-width: 740px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

/* Back link */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 2.5rem;
  color: var(--text-muted);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  transition: color 0.2s;
}

.back-link:hover { color: var(--accent); }
.back-link svg { width: 14px; height: 14px; }

/* Lesson header */
.lesson-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  animation: fadeUp 0.5s var(--ease) both;
}

.lesson-number {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.lesson-number svg { width: 14px; height: 14px; }

h1 {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 1.2rem + 3vw, 2.4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.meta {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.tags {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.65rem;
  flex-wrap: wrap;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 0.2rem 0.55rem;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: 6px;
  color: var(--accent);
  letter-spacing: 0.03em;
  font-weight: 500;
}

/* Flashcard */
.flashcard {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  margin: 2rem 0 2.5rem;
  cursor: pointer;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
  position: relative;
  overflow: hidden;
  animation: fadeUp 0.5s var(--ease) 0.1s both;
}

.flashcard::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-glow), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.flashcard:hover {
  border-color: var(--border-hover);
  box-shadow: 0 8px 32px var(--shadow-card);
}

.flashcard:hover::before { opacity: 1; }

.flashcard:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.flashcard-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 1rem;
  font-weight: 500;
}

.flashcard-label svg { width: 13px; height: 13px; }

.flashcard-front strong {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.45;
  display: block;
}

.flashcard-back {
  display: none;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--text);
  line-height: 1.7;
}

.flashcard.flipped .flashcard-back { display: block; }

.flip-hint {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 1.25rem;
}

.flip-hint svg { width: 14px; height: 14px; }
.flashcard.flipped .flip-hint { display: none; }

/* Content */
.content {
  animation: fadeUp 0.5s var(--ease) 0.2s both;
}

.content h2 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 600;
  margin: 2.5rem 0 1rem;
  color: var(--accent);
  letter-spacing: -0.01em;
}

.content h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.75rem 0 0.75rem;
}

.content p { margin-bottom: 1rem; }
.content ul, .content ol { margin: 1rem 0; padding-left: 1.5rem; }
.content li { margin-bottom: 0.5rem; }

.content code {
  font-family: var(--font-mono);
  background: var(--code-bg);
  border: 1px solid var(--border);
  padding: 0.15rem 0.45rem;
  border-radius: 5px;
  font-size: 0.88em;
}

.content pre,
.content pre[class*="language-"] {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1.25rem 0;
}

.content pre code,
.content pre[class*="language-"] code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--text);
}

/* In dark mode, let Prism Tomorrow's colorful tokens render on the dark bg.
   In light mode, the Prism Tomorrow palette is tuned for dark backgrounds and
   washes out on our warm beige — force every token to inherit --text so code
   stays readable (monochrome, but legible). */
[data-theme="dark"] .content pre code [class*="token"] { color: unset; }
.content pre code [class*="token"] { color: var(--text); }

.content blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1rem;
  color: var(--text-muted);
  margin: 1.25rem 0;
  background: var(--surface);
  border-radius: 0 8px 8px 0;
}

/* Key takeaway */
.key-takeaway {
  background: var(--accent-soft);
  border: 1px solid var(--tag-border);
  border-radius: 14px;
  padding: 1.75rem;
  margin: 2.5rem 0;
  animation: fadeUp 0.5s var(--ease) 0.3s both;
}

.key-takeaway h3 {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-heading);
  color: var(--accent);
  margin: 0 0 0.6rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.key-takeaway h3 svg { width: 16px; height: 16px; }
.key-takeaway p { color: var(--text); line-height: 1.65; }

/* Navigation footer */
.nav-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  animation: fadeUp 0.5s var(--ease) 0.35s both;
}

.nav-footer a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-muted);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  transition: color 0.2s;
}

.nav-footer a:hover { color: var(--accent); }
.nav-footer a svg { width: 14px; height: 14px; }

/* Index page overrides */
.header {
  text-align: center;
  margin-bottom: 3.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
  animation: fadeUp 0.6s var(--ease) both;
}

.header-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 1.25rem;
}

.header-label svg { width: 16px; height: 16px; }

.header h1 {
  font-size: clamp(2rem, 1.5rem + 4vw, 3.2rem);
  margin-bottom: 0.75rem;
}

.header h1 .accent { color: var(--accent); }

.header p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 420px;
  margin: 0 auto;
}

.stats {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.stats strong { color: var(--accent); font-weight: 600; }

/* Lessons grid */
.lessons-grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  animation: fadeUp 0.6s var(--ease) 0.15s both;
}

.lesson-card {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 1.25rem;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  text-decoration: none;
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.25s var(--ease),
              background 0.25s var(--ease),
              transform 0.25s var(--ease),
              box-shadow 0.25s var(--ease);
}

.lesson-card:hover {
  border-color: var(--border-hover);
  background: var(--surface-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--shadow-card), 0 0 0 1px var(--border-hover);
}

.lesson-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.card-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: var(--accent-soft);
  border: 1px solid var(--tag-border);
  border-radius: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  flex-shrink: 0;
}

.card-body .date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-bottom: 0.25rem;
}

.card-body .title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 0.4rem;
}

.card-body .summary {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.card-body .meta {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 5rem 1rem;
  color: var(--text-muted);
}

.empty-state .icon-wrap {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  border-radius: 16px;
}

.empty-state .icon-wrap svg { width: 28px; height: 28px; color: var(--accent); }
.empty-state p { font-size: 1rem; line-height: 1.7; }

/* Footer */
.footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  text-align: center;
  animation: fadeUp 0.6s var(--ease) 0.3s both;
}

.footer a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  transition: color 0.2s;
}

.footer a:hover { color: var(--accent); }
.footer a svg { width: 14px; height: 14px; }

/* Theme toggle */
.theme-toggle {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 100;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 1.1rem;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s var(--ease);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
}

.theme-toggle:hover {
  color: var(--text);
  border-color: var(--border-hover);
  background: var(--accent-soft);
}

.theme-toggle:active {
  transform: scale(0.93);
}

/* ── Top actions (newsletter + theme toggle) ── */
.top-actions {
  position: fixed;
  top: 1.25rem;
  right: 1.25rem;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.top-actions .theme-toggle {
  position: static;
  top: auto;
  right: auto;
}

.newsletter-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  height: 38px;
  padding: 0 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s var(--ease);
  backdrop-filter: blur(8px);
}

.newsletter-btn svg {
  width: 15px;
  height: 15px;
}

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

.newsletter-btn:active {
  transform: scale(0.97);
}

@media (max-width: 480px) {
  .top-actions { gap: 0.4rem; top: 0.85rem; right: 0.85rem; }
  .newsletter-btn span { display: none; }
  .newsletter-btn { width: 38px; padding: 0; justify-content: center; }
}

/* ── Newsletter modal ── */
.newsletter-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeUp 0.2s var(--ease) both;
}

.newsletter-modal[hidden] { display: none; }

.newsletter-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
}

.newsletter-modal-card {
  position: relative;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  max-width: 440px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  animation: fadeUp 0.25s var(--ease) both;
}

.newsletter-modal-close {
  position: absolute;
  top: 0.75rem;
  right: 0.85rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  transition: all 0.15s var(--ease);
}

.newsletter-modal-close:hover {
  color: var(--text);
  background: var(--surface);
}

.newsletter-modal-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.85rem;
}

.newsletter-modal-label svg { width: 14px; height: 14px; }

.newsletter-modal-card h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 0.6rem;
  letter-spacing: -0.01em;
}

.newsletter-modal-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.55;
  margin-bottom: 1.4rem;
}

.newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.newsletter-field-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 500;
}

.newsletter-form input[type="email"] {
  width: 100%;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color 0.15s var(--ease), background 0.15s var(--ease);
}

.newsletter-form input[type="email"]:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg);
}

.newsletter-error {
  color: #ef4444;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  margin-top: 0.1rem;
}

.newsletter-submit {
  margin-top: 0.4rem;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 10px;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s var(--ease), transform 0.15s var(--ease);
}

.newsletter-submit:hover { opacity: 0.92; }
.newsletter-submit:active { transform: scale(0.98); }

.newsletter-fineprint {
  color: var(--text-muted);
  font-size: 0.75rem;
  line-height: 1.5;
  margin-top: 0.4rem;
}

.newsletter-success {
  background: var(--accent-soft);
  border: 1px solid var(--tag-border);
  border-radius: 12px;
  padding: 1rem 1.15rem;
  color: var(--text);
}

.newsletter-success strong {
  display: block;
  color: var(--accent);
  margin-bottom: 0.4rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
}

.newsletter-success p {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--text-muted);
  margin: 0;
}

/* Animations */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* Responsive — tablet */
@media (max-width: 768px) {
  .container { padding: 2.5rem 1.25rem 3.5rem; }
  .back-link { margin-bottom: 2rem; min-height: 44px; display: inline-flex; align-items: center; }
  .lesson-header { margin-bottom: 2rem; padding-bottom: 1.5rem; }
  .flashcard { padding: 1.5rem; margin: 1.5rem 0 2rem; }
  .flashcard-front strong { font-size: 1.05rem; }
  .content h2 { font-size: 1.2rem; margin: 2rem 0 0.85rem; }
  .content h3 { font-size: 1.05rem; }
  .content pre { padding: 1rem 1.15rem; }
  .content pre code { font-size: 0.82rem; }
  .key-takeaway { padding: 1.35rem; }
  .nav-footer { margin-top: 2.5rem; padding-top: 1.5rem; }

  /* Index */
  .header { margin-bottom: 2.5rem; padding-bottom: 2rem; }
  .header h1 { font-size: clamp(1.8rem, 1.4rem + 3vw, 2.6rem); }
  .header p { font-size: 0.95rem; }
  .lesson-card { padding: 1.25rem; gap: 1rem; }
  .card-body .title { font-size: 1.1rem; }
  .card-body .summary { font-size: 0.85rem; }
  .footer { margin-top: 3rem; }
}

/* Responsive — mobile */
@media (max-width: 480px) {
  .container { padding: 1.75rem 1rem 3rem; }
  .back-link { font-size: 0.75rem; margin-bottom: 1.5rem; }
  .lesson-header { margin-bottom: 1.5rem; padding-bottom: 1.25rem; }
  .lesson-number { font-size: 0.7rem; margin-bottom: 0.5rem; }
  h1 { margin-bottom: 0.75rem; }
  .meta { font-size: 0.75rem; }
  .tags { gap: 0.4rem; }
  .tag { font-size: 0.65rem; padding: 0.18rem 0.45rem; }

  .flashcard { padding: 1.25rem; border-radius: 12px; margin: 1.25rem 0 1.75rem; }
  .flashcard-label { font-size: 0.65rem; margin-bottom: 0.75rem; }
  .flashcard-front strong { font-size: 1rem; line-height: 1.4; }
  .flip-hint { font-size: 0.7rem; margin-top: 1rem; }

  .content p { font-size: 0.92rem; }
  .content ul, .content ol { padding-left: 1.25rem; }
  .content li { font-size: 0.92rem; }
  .content code { font-size: 0.84em; padding: 0.12rem 0.35rem; }
  .content pre { padding: 0.85rem 1rem; border-radius: 8px; margin: 1rem 0; -webkit-overflow-scrolling: touch; }
  .content pre code { font-size: 0.78rem; line-height: 1.6; }
  .content blockquote { padding: 0.6rem 0.85rem; font-size: 0.9rem; }
  .content h2 { font-size: 1.15rem; margin: 1.75rem 0 0.75rem; }
  .content h3 { font-size: 1rem; margin: 1.5rem 0 0.6rem; }

  .key-takeaway { padding: 1.15rem; border-radius: 12px; margin: 2rem 0; }
  .key-takeaway h3 { font-size: 0.88rem; }
  .key-takeaway p { font-size: 0.9rem; }

  .nav-footer {
    flex-direction: column;
    gap: 0.75rem;
    align-items: stretch;
    text-align: center;
    margin-top: 2rem;
    padding-top: 1.25rem;
  }
  .nav-footer a { justify-content: center; min-height: 44px; font-size: 0.78rem; }

  /* Index */
  .header { margin-bottom: 2rem; padding-bottom: 1.5rem; }
  .header-label { font-size: 0.7rem; margin-bottom: 1rem; }
  .stats { gap: 1.25rem; font-size: 0.75rem; }
  .lessons-grid { gap: 0.75rem; }
  .lesson-card { grid-template-columns: 1fr; gap: 0.6rem; padding: 1.15rem; border-radius: 12px; min-height: 44px; }
  .card-number { width: auto; height: auto; padding: 0.2rem 0.6rem; border-radius: 6px; font-size: 0.68rem; justify-self: start; }
  .card-body .date { font-size: 0.7rem; }
  .card-body .title { font-size: 1.05rem; }
  .card-body .summary { font-size: 0.84rem; line-height: 1.5; }
  .card-body .meta { gap: 0.4rem; }
  .tag { font-size: 0.65rem; padding: 0.18rem 0.45rem; }
  .empty-state { padding: 3rem 0.5rem; }
  .empty-state .icon-wrap { width: 56px; height: 56px; }
  .footer { margin-top: 2.5rem; padding-top: 1.5rem; }
  .footer a { font-size: 0.8rem; min-height: 44px; display: inline-flex; align-items: center; }
}

/* Prevent horizontal overflow */
html, body { overflow-x: hidden; }

/* Safe area insets for notched devices */
@supports (padding: env(safe-area-inset-bottom)) {
  .container {
    padding-left: max(1rem, env(safe-area-inset-left));
    padding-right: max(1rem, env(safe-area-inset-right));
    padding-bottom: max(3rem, env(safe-area-inset-bottom));
  }
}