/*
  pdf2speech - shared stylesheet (EN + FA)
  Identity: "a book that speaks". Deep ink background, one warm amber
  accent, soft cream text. Serif headings, system sans body.
  Mobile-first: base styles target ~360px; min-width layers at
  640 / 768 / 1024px. [dir="rtl"] holds the Persian overrides.
*/

:root {
  --ink: #0e1116;
  --ink-raised: #161b22;
  --ink-line: #262d38;
  --amber: #e8a33d;
  --amber-soft: rgba(232, 163, 61, 0.14);
  --cream: #f2ead9;
  --cream-dim: #b9b2a3;
  --serif: Georgia, "Times New Roman", Cambria, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono",
    monospace;
  --max: 46rem;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--ink);
  color: var(--cream);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--amber);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover,
a:focus-visible {
  text-decoration-thickness: 2px;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  line-height: 1.25;
  color: var(--cream);
}

h1 {
  font-size: 1.9rem;
  margin: 0 0 0.75rem;
}

h2 {
  font-size: 1.4rem;
  margin: 0 0 1rem;
}

h3 {
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
}

p {
  margin: 0 0 1rem;
}

.container {
  width: 100%;
  max-width: 64rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---------- header / nav ---------- */

header.site {
  border-bottom: 1px solid var(--ink-line);
  padding: 1rem 0;
}

header.site .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--cream);
  text-decoration: none;
}

.brand img,
.brand svg {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

nav.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

nav.site-nav a {
  color: var(--cream-dim);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 0.4rem 0.2rem;
}

nav.site-nav a:hover,
nav.site-nav a:focus-visible {
  color: var(--amber);
}

.lang-switch {
  border: 1px solid var(--ink-line);
  border-radius: 999px;
  padding: 0.4rem 0.9rem !important;
  color: var(--cream) !important;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.lang-switch:hover,
.lang-switch:focus-visible {
  border-color: var(--amber);
  color: var(--amber) !important;
}

/* ---------- hero ---------- */

.hero {
  padding: 2.75rem 0 2.25rem;
}

.hero .kicker {
  color: var(--amber);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  margin: 0 0 0.75rem;
}

.hero h1 {
  max-width: 22ch;
}

.hero .lede {
  font-size: 1.05rem;
  color: var(--cream-dim);
  max-width: 42ch;
}

.cta-row {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.7rem 1.3rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--amber);
  color: #1a1305;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: #f0b054;
}

.btn-secondary {
  border-color: var(--ink-line);
  color: var(--cream);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: var(--amber);
  color: var(--amber);
}

/* ---------- sections ---------- */

section {
  padding: 2.25rem 0;
  border-top: 1px solid var(--ink-line);
}

section .section-intro {
  color: var(--cream-dim);
  max-width: 46ch;
  margin: 0 0 1.5rem;
}

/* ---------- feature grid ---------- */

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.feature {
  background: var(--ink-raised);
  border: 1px solid var(--ink-line);
  border-radius: 10px;
  padding: 1.25rem;
}

.feature h3 {
  color: var(--amber);
}

.feature p {
  color: var(--cream-dim);
  margin: 0;
  font-size: 0.96rem;
}

/* ---------- steps ---------- */

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  counter-reset: step;
}

.steps li {
  position: relative;
  padding-inline-start: 3rem;
}

.steps .num {
  position: absolute;
  inset-inline-start: 0;
  top: 0;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: var(--amber-soft);
  color: var(--amber);
  font-family: var(--serif);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.steps h3 {
  margin-bottom: 0.35rem;
}

.steps p {
  color: var(--cream-dim);
  margin: 0;
  font-size: 0.96rem;
}

/* ---------- code blocks ---------- */

pre {
  background: #090b0f;
  border: 1px solid var(--ink-line);
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.55;
  -webkit-overflow-scrolling: touch;
}

code {
  font-family: var(--mono);
  color: var(--cream);
}

p code,
li code {
  background: var(--ink-raised);
  border: 1px solid var(--ink-line);
  border-radius: 4px;
  padding: 0.1rem 0.35rem;
  font-size: 0.88em;
}

.note {
  font-size: 0.9rem;
  color: var(--cream-dim);
  border-inline-start: 3px solid var(--amber);
  padding-inline-start: 0.85rem;
  margin: 1rem 0;
}

.usage-block {
  margin-bottom: 2rem;
}

.usage-block:last-child {
  margin-bottom: 0;
}

/* ---------- footer ---------- */

footer.site {
  border-top: 1px solid var(--ink-line);
  padding: 2rem 0 2.5rem;
}

footer.site p {
  color: var(--cream-dim);
  font-size: 0.88rem;
  margin: 0;
}

footer.site a {
  color: var(--cream-dim);
}

footer.site a:hover,
footer.site a:focus-visible {
  color: var(--amber);
}

/* ---------- breakpoints ---------- */

@media (min-width: 640px) {
  .hero h1 {
    font-size: 2.35rem;
  }

  .cta-row {
    flex-direction: row;
  }

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

@media (min-width: 768px) {
  h1 {
    font-size: 2.6rem;
  }

  h2 {
    font-size: 1.65rem;
  }

  .hero {
    padding: 4rem 0 3rem;
  }

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

  .steps li {
    padding-inline-start: 0;
    padding-top: 3rem;
  }

  .steps .num {
    inset-inline-start: 0;
    top: 0;
  }
}

@media (min-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero .lede {
    font-size: 1.15rem;
  }
}

/* ============================================================
   RTL (Persian) overrides
   ============================================================ */

[dir="rtl"] body {
  font-family: "Vazirmatn", var(--sans);
}

[dir="rtl"] h1,
[dir="rtl"] h2,
[dir="rtl"] h3 {
  font-family: "Vazirmatn", var(--serif);
  font-weight: 700;
}

[dir="rtl"] .kicker {
  letter-spacing: 0;
}

[dir="rtl"] code,
[dir="rtl"] pre,
[dir="rtl"] .steps .num {
  direction: ltr;
  unicode-bidi: isolate;
}

[dir="rtl"] pre {
  text-align: left;
}

[dir="rtl"] .note {
  border-inline-start: none;
  border-inline-end: 3px solid var(--amber);
  padding-inline-start: 0;
  padding-inline-end: 0.85rem;
}