/* ============================================================
   Mindle — landing page
   Sepia-first palette lifted from the app's reader.css so the
   page feels like an extension of Mindle itself.
   ============================================================ */

:root {
  /* Sepia palette — matches Mindle's default reader theme */
  --bg:             #f6eed9;
  --bg-alt:         #ede2bf;   /* darker band for alternating sections */
  --surface:        #faf4df;   /* card / mock-paper */
  --text:           #2a1f14;
  --muted:          #7d6b52;
  --accent:         #8c5520;   /* rusty brown */
  --accent-soft:    rgba(140, 85, 32, 0.15);
  --rule:           #c9b88c;
  --code-bg:        #eadfbf;
  --highlight:      rgba(243, 176, 74, 0.55);
  --highlight-note: rgba(217, 122, 42, 0.45);
  --link:           #8c5520;
  --selection:      rgba(140, 85, 32, 0.28);

  --font-serif:     ui-serif, "New York", "Iowan Old Style", "Palatino", Georgia, serif;
  --font-mono:      ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --font-signature: 'Satoshi', -apple-system, BlinkMacSystemFont, sans-serif;

  --container:      1100px;
  --section-pad:    6.5rem;
  --radius:         8px;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "liga", "kern";
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
::selection { background: var(--selection); }

code, kbd, pre, samp {
  font-family: var(--font-mono);
  font-size: 0.9em;
}
p code, li code, td code, h3 code {
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

kbd {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0.1em 0.45em;
  font-size: 0.82em;
  color: var(--text);
  white-space: nowrap;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(246, 238, 217, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--rule);
  z-index: 100;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 1.5rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
}

.nav-logo-mark { width: 24px; height: 24px; }
.nav-logo-text { letter-spacing: 0.01em; }

.nav-links {
  display: flex;
  gap: 1.75rem;
}

.nav-links a {
  font-size: 0.92rem;
  color: var(--muted);
  transition: color 0.15s ease;
}

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

/* ===== Hero ===== */
.hero {
  min-height: 92vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 7.5rem 1.5rem 5rem;
  text-align: center;
  position: relative;
  background: var(--bg);
}

.hero-content { max-width: 640px; }

.hero-logo {
  width: 96px;
  height: 96px;
  margin: 0 auto 1.25rem;
  opacity: 0.95;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 4.5rem);
  font-weight: 700;
  letter-spacing: 0.005em;
  line-height: 1;
  margin-bottom: 1.1rem;
}

.tagline {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.15rem, 2.3vw, 1.4rem);
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.subtitle {
  font-size: 1rem;
  color: var(--muted);
  margin-bottom: 2.5rem;
}

.subtitle code {
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

.hero-links {
  display: flex;
  gap: 0.9rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  transition: all 0.18s ease;
  cursor: pointer;
  border: 2px solid transparent;
}

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

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

.btn-large {
  padding: 0.9rem 1.8rem;
  font-size: 1rem;
}

/* ===== Scroll indicator ===== */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  transition: color 0.15s ease;
  animation: bounce 2.2s ease-in-out infinite;
}
.scroll-indicator:hover { color: var(--accent); }
.scroll-indicator svg { width: 18px; height: 18px; }

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-6px); }
  60% { transform: translateX(-50%) translateY(-3px); }
}

/* ===== Section scaffolding ===== */
.section { padding: var(--section-pad) 0; }
.section h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 3rem;
  position: relative;
  padding-bottom: 0.6rem;
}
.section h2::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 48px;
  height: 3px;
  background: var(--accent);
}

/* Alternating band colors */
.preview   { background: var(--bg-alt); }
.features  { background: var(--bg); }
.shortcuts { background: var(--bg-alt); }
.install   { background: var(--bg); }
.footer    { background: var(--bg-alt); }

/* ===== Reader preview ===== */
.reader-mock {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 2rem;
  max-width: 880px;
  margin: 0 auto;
  background: var(--surface);
  border-radius: 12px;
  padding: 3.25rem 3.25rem;
  box-shadow:
    0 24px 60px rgba(60, 40, 20, 0.12),
    0 0 0 1px rgba(60, 40, 20, 0.05);
}

.reader-mock article h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin: 0 0 1em;
  color: var(--text);
}

.reader-mock article p {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.75;
  margin: 0.8em 0;
}

mark.mindle-hl {
  background: var(--highlight);
  padding: 0 2px;
  border-radius: 2px;
}
mark.mindle-hl.has-note {
  background: var(--highlight-note);
}

.note-card {
  align-self: start;
  background: var(--bg-alt);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  padding: 0.9rem 1rem;
  font-family: var(--font-serif);
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--muted);
}
.note-card p { font-style: italic; }
.note-label {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

/* ===== Features grid ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 1.65rem 1.5rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 28px rgba(60, 40, 20, 0.09);
  border-color: var(--accent);
}
.feature-card h3 {
  font-family: var(--font-serif);
  font-size: 1.12rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.feature-card p {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.55;
}
.feature-card code {
  background: var(--code-bg);
  padding: 0.1em 0.3em;
  border-radius: 3px;
}

/* ===== Shortcuts table ===== */
.shortcut-table {
  border-collapse: collapse;
  max-width: 620px;
  width: 100%;
  margin: 0;
  font-family: var(--font-serif);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
}
.shortcut-table tr { border-bottom: 1px solid var(--rule); }
.shortcut-table tr:last-child { border-bottom: 0; }
.shortcut-table td {
  padding: 0.85rem 1.1rem;
  font-size: 0.95rem;
  color: var(--text);
  vertical-align: middle;
}
.shortcut-table td:first-child {
  width: 180px;
  background: var(--bg);
  border-right: 1px solid var(--rule);
  white-space: nowrap;
}
.shortcut-table td:last-child { color: var(--muted); }

/* ===== Install ===== */
.install-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: stretch;
}

.install-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 2rem 1.9rem;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.install-card h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
}

.install-lead { color: var(--muted); font-size: 0.95rem; }
.install-lead code {
  background: var(--code-bg);
  padding: 0.08em 0.3em;
  border-radius: 3px;
}

.install-card .btn { align-self: flex-start; }

.install-note {
  font-size: 0.88rem;
  color: var(--muted);
}

.install-card pre {
  background: var(--code-bg);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  font-size: 0.85rem;
  line-height: 1.55;
  overflow-x: auto;
  color: var(--text);
}

/* ===== Footer ===== */
.footer { padding: 3rem 0; border-top: 1px solid var(--rule); }
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-meta { font-size: 0.88rem; color: var(--muted); }
.footer-meta a { color: var(--muted); border-bottom: 1px dotted var(--rule); }
.footer-meta a:hover { color: var(--accent); border-bottom-color: var(--accent); }

.footer-links { display: flex; align-items: center; gap: 1.25rem; }
.footer-link {
  font-size: 0.88rem;
  color: var(--muted);
  transition: color 0.15s ease;
}
.footer-link:hover { color: var(--accent); }

.footer-signature {
  font-family: var(--font-signature);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--muted);
  padding-left: 1.25rem;
  border-left: 1px solid var(--rule);
  transition: color 0.15s ease;
}
.footer-signature:hover { color: var(--accent); }

/* ===== Manifesto overlay (easter egg) ===== */
.manifesto {
  position: fixed;
  inset: 0;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease;
}
.manifesto[hidden] { display: none; }
.manifesto.is-open {
  opacity: 1;
  pointer-events: auto;
}

.manifesto-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(30, 20, 10, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.manifesto-paper {
  position: relative;
  max-width: 720px;
  margin: 3.5rem auto;
  max-height: calc(100vh - 7rem);
  overflow-y: auto;
  background: var(--surface);
  border-radius: 12px;
  padding: 3.5rem 3.75rem 3rem;
  box-shadow: 0 40px 100px rgba(30, 20, 10, 0.35);
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  transform: translateY(12px);
  transition: transform 0.28s ease;
}
.manifesto.is-open .manifesto-paper { transform: translateY(0); }

.manifesto-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--rule);
  font-family: var(--font-serif);
  font-size: 1.35rem;
  line-height: 1;
  color: var(--muted);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}
.manifesto-close:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: rotate(90deg);
}

.manifesto-header {
  margin-bottom: 2.25rem;
  padding-right: 3rem;
}
.manifesto-header h1 {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 0.4rem;
}
.manifesto-byline {
  font-size: 0.9rem;
  color: var(--muted);
  font-style: italic;
}
.manifesto-byline a { color: var(--muted); border-bottom: 1px dotted var(--rule); }
.manifesto-byline a:hover { color: var(--accent); }

.manifesto-body { font-size: 1.02rem; }
.manifesto-body p { margin: 0.9em 0; }
.manifesto-body h2 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  margin: 2em 0 0.7em;
  line-height: 1.3;
}
.manifesto-body ol, .manifesto-body ul {
  padding-left: 1.6em;
  margin: 0.9em 0;
}
.manifesto-body li { margin: 0.35em 0; }
.manifesto-body a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-thickness: 0.5px;
  text-underline-offset: 2px;
}
.manifesto-body a:hover { text-decoration-thickness: 1.5px; }
.manifesto-body em { font-style: italic; }
.manifesto-body strong { font-weight: 700; }
.manifesto-body hr {
  border: 0;
  height: 1px;
  background: var(--rule);
  margin: 2.2em auto;
  width: 50%;
}

.manifesto-body code {
  background: var(--code-bg);
  padding: 0.1em 0.3em;
  border-radius: 3px;
  font-size: 0.88em;
}
.manifesto-body pre {
  background: var(--code-bg);
  padding: 1rem 1.1rem;
  border-radius: 6px;
  overflow-x: auto;
  margin: 1.2em 0;
  line-height: 1.55;
}
.manifesto-body pre code {
  background: transparent;
  padding: 0;
  font-size: 0.86em;
}

.manifesto-footer {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
  font-style: italic;
}
.manifesto-footer a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 0.5px;
}

/* Stealth: logo stays inert-looking, but gets a hair more weight on hover
   so the curious hand feels encouraged without being told. */
.hero-logo {
  transition: transform 0.4s ease;
}
.hero-logo:hover {
  transform: scale(1.03);
  cursor: pointer;
}

/* ===== Responsive ===== */
@media (max-width: 760px) {
  :root { --section-pad: 4rem; }

  .manifesto-paper {
    margin: 1rem;
    padding: 2rem 1.5rem;
    max-height: calc(100vh - 2rem);
  }
  .manifesto-header { padding-right: 2.5rem; }
  .manifesto-header h1 { font-size: 1.6rem; }

  .nav-content { padding: 0.8rem 1rem; }
  .nav-links { gap: 1rem; }
  .nav-links a:nth-child(2),
  .nav-links a:nth-child(3) { display: none; }

  .hero { padding-top: 6rem; }
  .hero-logo { width: 72px; height: 72px; }

  .reader-mock {
    grid-template-columns: 1fr;
    padding: 1.5rem 1.6rem;
    gap: 1rem;
  }

  .feature-grid { grid-template-columns: 1fr; }
  .install-grid { grid-template-columns: 1fr; }
  .scroll-indicator { display: none; }

  .footer-content { flex-direction: column; align-items: flex-start; gap: 0.9rem; }
}