/* Slashbooks marketing site — calm, sharp, founder-built */

:root {
  --bg: #faf9f7;
  --bg-alt: #f0eeea;
  --text: #1a1a18;
  --text-muted: #5c5a54;
  --accent: #2d4a3e;
  --accent-light: #3d6b58;
  --border: #ddd9d2;
  --quote-bg: #eef2ef;
  --max-width: 42rem;
  --wide-width: 52rem;
}

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

html {
  font-size: 18px;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

a:focus-visible,
.btn:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent-light);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Motion (skipped for people who prefer reduced motion) */
@media (prefers-reduced-motion: no-preference) {
  @keyframes rise-in {
    from {
      opacity: 0;
      transform: translateY(16px);
    }
    to {
      opacity: 1;
      transform: none;
    }
  }

  .hero > * {
    animation: rise-in 0.6s ease-out backwards;
  }

  .hero > *:nth-child(2) { animation-delay: 0.07s; }
  .hero > *:nth-child(3) { animation-delay: 0.14s; }
  .hero > *:nth-child(4) { animation-delay: 0.2s; }
  .hero > *:nth-child(5) { animation-delay: 0.26s; }
  .hero > *:nth-child(6) { animation-delay: 0.32s; }

  .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.55s ease, transform 0.55s ease;
  }

  .reveal.is-visible {
    opacity: 1;
    transform: none;
  }

  .btn,
  .workflow article,
  .difference article,
  .fit-grid article,
  .hero-video-button {
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
  }

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

  .workflow article:hover,
  .difference article:hover,
  .fit-grid article:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(31, 43, 36, 0.08);
  }

  .hero-video:hover .hero-video-button {
    transform: translate(-50%, -50%) scale(1.08);
  }
}

body {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 20;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 0.85rem;
  text-decoration: none;
}

.skip-link:focus {
  left: 0;
  color: #fff;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* Navigation */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header nav {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
}

.site-logo {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

.site-logo:hover {
  color: var(--accent);
}

.logo-slash {
  color: var(--accent-light);
  font-family: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, monospace;
  font-weight: 700;
  margin-right: 1px;
}

.nav-cta {
  display: inline-block;
  background: var(--accent);
  color: #fff !important;
  padding: 0.28rem 0.85rem;
  border-radius: 999px;
  font-weight: 500;
}

.nav-cta:hover {
  background: var(--accent-light);
}

.site-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 0.85rem;
}

.site-nav-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.site-nav-links a:hover,
.site-nav-links a[aria-current="page"] {
  color: var(--accent);
}

/* Main content */
main {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.narrow {
  max-width: var(--max-width);
}

/* Hero */
.hero {
  margin-bottom: 3rem;
  padding: 1.25rem 0 0;
}

.hero-video {
  position: relative;
  display: block;
  margin-top: 1.5rem;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #000;
  box-shadow: 0 18px 40px rgba(31, 43, 36, 0.10);
}

.hero-video img,
.hero-video iframe {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: 0;
}

.hero-video-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 4.2rem;
  height: 4.2rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.hero-video-button::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 55%;
  transform: translate(-50%, -50%);
  border-style: solid;
  border-width: 0.68rem 0 0.68rem 1.1rem;
  border-color: transparent transparent transparent #fff;
}

.hero-video:hover .hero-video-button,
.hero-video:focus-visible .hero-video-button {
  background: var(--accent-light);
}

.hero-tagline {
  max-width: 37rem;
  margin: 0 0 1.25rem;
  font-size: 1.2rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--text-muted);
}

.trust-line,
.workflow span {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

.trust-line {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.83rem;
}

/* Compatibility and status chips */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: -0.5rem 0 0.9rem;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

.chip-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.chip {
  display: inline-block;
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text);
}

.chip[hidden] {
  display: none;
}

a.chip-link {
  color: var(--accent);
  text-decoration: none;
}

a.chip-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Typography */
h1 {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: clamp(2.2rem, 6vw, 3.35rem);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin: 0 0 1rem;
}

.workflow,
.difference {
  margin: 3.25rem 0;
}

.workflow h2,
.difference h2 {
  margin-top: 0;
}

.workflow-grid,
.difference-grid {
  display: grid;
  gap: 0.75rem;
}

.workflow-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.workflow article,
.difference article {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  background: #fff;
}

.workflow span {
  color: var(--accent-light);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.workflow h3,
.difference h3 {
  margin: 0.5rem 0 0.35rem;
}

.workflow p,
.difference p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.difference article {
  border-left: 3px solid var(--accent);
}

/* Fit / not-fit cards */
.fit {
  margin: 3.25rem 0;
}

.fit h2 {
  margin-top: 0;
}

.fit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.fit-grid article {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.15rem;
  background: #fff;
}

.fit-grid h3 {
  margin: 0 0 0.65rem;
}

.fit-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.fit-list li {
  position: relative;
  padding-left: 1.45rem;
  margin-bottom: 0.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.fit-list li:last-child {
  margin-bottom: 0;
}

.fit-list li::before {
  position: absolute;
  left: 0;
  top: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-weight: 700;
}

.fit-list-yes li::before {
  content: "\2713"; /* check mark */
  color: var(--accent-light);
}

.fit-list-no li::before {
  content: "\2715"; /* cross mark */
  color: #a05a2c;
}

/* Comparison teaser */
.compare-teaser {
  margin: 3.25rem 0;
}

/* FAQ */
.faq {
  margin: 3.25rem 0;
}

.faq details {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  padding: 0 1.1rem;
  margin-bottom: 0.6rem;
}

.faq summary {
  cursor: pointer;
  padding: 0.8rem 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
}

.faq summary::marker {
  color: var(--accent-light);
}

.faq summary:hover {
  color: var(--accent);
}

.faq details[open] summary {
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.75rem;
}

.faq details p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 0.9rem;
}

/* Two-column capability list */
.capabilities {
  columns: 2;
  column-gap: 2rem;
}

.capabilities li {
  break-inside: avoid;
}

/* Final CTA band */
.final-cta {
  margin: 3.25rem 0 2rem;
  padding: 1.75rem 1.5rem;
  background: var(--quote-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-align: center;
}

.final-cta h2 {
  margin-top: 0;
}

.final-cta p {
  color: var(--text-muted);
  max-width: 30rem;
  margin: 0 auto 1rem;
}

.final-cta .cta-row {
  justify-content: center;
  margin: 1.25rem 0 0;
}

h2 {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 2.5rem 0 0.75rem;
  color: var(--text);
}

h3 {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
}

p {
  margin: 0 0 1rem;
}

.lead {
  font-size: 1.1rem;
  color: var(--text-muted);
}

a {
  color: var(--accent-light);
}

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

/* Blockquote / founder note */
blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  background: var(--quote-bg);
  border-left: 3px solid var(--accent);
  border-radius: 0 4px 4px 0;
  font-style: italic;
  color: var(--text-muted);
}

blockquote p:last-child {
  margin-bottom: 0;
}

.quote-attribution {
  font-style: normal;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 0.8rem;
  margin-top: 0.6rem;
}

/* Lists */
ul, ol {
  margin: 0 0 1rem;
  padding-left: 1.35rem;
}

li {
  margin-bottom: 0.35rem;
}

li::marker {
  color: var(--accent-light);
}

/* Callout boxes */
.callout {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.callout-warning {
  border-color: #d4c9a8;
  background: #faf6ed;
}

.callout p:last-child {
  margin-bottom: 0;
}

/* Comparison tables */
.comparison {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.95rem;
}

.comparison th,
.comparison td {
  border: 1px solid var(--border);
  padding: 0.65rem 0.85rem;
  text-align: left;
  vertical-align: top;
}

.comparison th {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  background: var(--bg-alt);
}

.comparison td:first-child {
  font-weight: 500;
  width: 28%;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 0.85rem;
}

.comparison td:last-child,
.comparison th:last-child {
  background: var(--quote-bg);
}

/* Install steps */
.install-block {
  margin: 1.25rem 0;
}

.install-block h3 {
  margin-top: 0;
}

pre {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.85rem 1rem;
  overflow-x: auto;
  font-size: 0.8rem;
  line-height: 1.5;
  margin: 0.5rem 0 1rem;
}

code {
  font-family: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, monospace;
  font-size: 0.85em;
  overflow-wrap: anywhere;
}

pre code {
  overflow-wrap: normal;
}

/* Buttons / CTAs */
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.5rem 0 2rem;
}

.btn {
  display: inline-block;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.55rem 1.1rem;
  border-radius: 4px;
  text-decoration: none;
  border: 1px solid transparent;
}

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

.btn-primary:hover {
  background: var(--accent-light);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border-color: var(--border);
}

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

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.25rem;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

.site-footer a {
  color: var(--text-muted);
}

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

/* Responsive */
@media (max-width: 600px) {
  html {
    font-size: 16px;
  }

  h1 {
    font-size: 2.15rem;
  }

  .workflow-grid,
  .fit-grid {
    grid-template-columns: 1fr;
  }

  .capabilities {
    columns: 1;
  }

  .comparison {
    font-size: 0.85rem;
  }

  .comparison td:first-child {
    width: 35%;
  }
}

@media (max-width: 480px) {
  .comparison thead {
    display: none;
  }

  .comparison tr {
    display: block;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
  }

  .comparison td {
    display: block;
    border: none;
    border-bottom: 1px solid var(--border);
  }

  .comparison td:last-child {
    border-bottom: none;
  }

  .comparison td:first-child {
    width: 100%;
    background: var(--bg-alt);
    font-size: 0.8rem;
  }

  .comparison td::before {
    content: attr(data-label);
    display: block;
    font-weight: 600;
    font-size: 0.75rem;
    color: var(--accent);
    margin-bottom: 0.25rem;
    font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  }

  .comparison td:first-child::before {
    display: none;
  }
}