/* ==========================================================================
   text2speech.online — design system (custom, dependency-free)
   Used by every page on the site (homepage, all 12 language pages,
   /voices/, /how-it-works/, /contact/, /privacy/).
   ========================================================================== */

:root {
  --color-primary: #e8890c;
  --color-primary-dark: #b8690a;
  --color-primary-light: #fff3e0;
  --color-ink: #1c1917;
  --color-ink-soft: #4b4541;
  --color-border: #e7e2da;
  --color-surface: #ffffff;
  --color-bg: #fbf9f5;
  --color-success: #1e7e34;
  --color-success-bg: #e7f5ea;
  --color-error: #b3261e;
  --color-error-bg: #fbeaea;
  --color-disabled: #d8ccb8;
  --color-footer-bg: #1c1917;
  --color-footer-text: #d8d2c9;
  --color-footer-text-strong: #ffffff;
  --color-footer-border: #3a352f;
  --color-footer-muted: #a39c90;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(28, 25, 23, 0.06);
  --shadow-md: 0 8px 24px rgba(28, 25, 23, 0.08);
  --container-w: 1160px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color-scheme: light;
}

/* ---------- Dark mode palette ----------
   Inspired by the dark, near-black/slate surfaces and muted warm accent
   commonly used by modern TTS/SaaS tools (e.g. text-to-speech.tech-style
   dark UIs), adapted to text2speech.online's own amber accent identity. */
[data-theme="dark"] {
  --color-primary: #e2903a;
  --color-primary-dark: #f5ab5c;
  --color-primary-light: #2b2214;
  --color-ink: #eae6df;
  --color-ink-soft: #a7a19a;
  --color-border: #2e2f33;
  --color-surface: #1b1c1f;
  --color-bg: #121316;
  --color-success: #4ade80;
  --color-success-bg: #123322;
  --color-error: #f87171;
  --color-error-bg: #3a1b1b;
  --color-disabled: #3a3733;
  --color-footer-bg: #0c0d0f;
  --color-footer-text: #b7b1a8;
  --color-footer-text-strong: #ffffff;
  --color-footer-border: #262729;
  --color-footer-muted: #726d64;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
html, body { max-width: 100%; overflow-x: hidden; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.55;
  font-size: 16px;
  transition: background-color .25s ease, color .25s ease;
}

/* Smooth, non-layout-shifting transition for every themeable surface */
.site-header, .generator, .form-control, .field select, .card, .step,
.lang-pill, .lang-menu, .nav-toggle, .btn-outline, .theme-toggle,
.site-footer, .cookie-banner, .faq-item, a {
  transition: background-color .25s ease, color .25s ease, border-color .25s ease;
}

img { max-width: 100%; display: block; }

a { color: var(--color-primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 20px;
}

h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .6em; font-weight: 700; }
h1 { font-size: clamp(1.7rem, 4vw, 2.4rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.8rem); }
h3 { font-size: 1.2rem; }
h4 { font-size: 1.05rem; }
p { margin: 0 0 1em; color: var(--color-ink-soft); }

:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 16px;
  z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus {
  left: 0;
}

/* ---------- Header ---------- */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  color: var(--color-ink);
}
.brand:hover { text-decoration: none; }
.brand img { border-radius: 6px; }
.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  cursor: pointer;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav li { list-style: none; }
.main-nav a {
  color: var(--color-ink-soft);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .95rem;
}
.main-nav a:hover { background: var(--color-primary-light); text-decoration: none; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  font-weight: 700;
  font-size: .95rem;
  cursor: pointer;
  font-family: inherit;
  line-height: 1;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-primary:disabled { background: var(--color-disabled); cursor: not-allowed; }
.btn-outline {
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-ink);
}
.btn-outline:hover { border-color: var(--color-primary); background: var(--color-primary-light); }
.btn-sm { padding: 6px 12px; font-size: .85rem; }

/* Language switcher */
.lang-switch { position: relative; }
.lang-switch-btn {
  display: flex;
  align-items: center;
  gap: 6px;
}
.lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 6px;
  min-width: 180px;
  max-height: 320px;
  overflow-y: auto;
  display: none;
  z-index: 50;
}
.lang-menu.open { display: block; }
.lang-menu a {
  display: block;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--color-ink);
  font-weight: 500;
  font-size: .9rem;
}
.lang-menu a:hover { background: var(--color-primary-light); text-decoration: none; }

/* Dark/light theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-ink);
  cursor: pointer;
  padding: 0;
}
.theme-toggle:hover { border-color: var(--color-primary); background: var(--color-primary-light); }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: inline-flex; }

/* ---------- Hero ---------- */
.hero {
  padding: 40px 0 12px;
  text-align: center;
}
.hero h1 { margin-bottom: .4em; }
.hero-sub {
  max-width: 680px;
  margin: 0 auto 1.2em;
  font-size: 1.05rem;
}
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  margin-bottom: 1.5em;
}
.hero-stat { text-align: center; }
.hero-stat strong { display: block; font-size: 1.4rem; color: var(--color-primary-dark); }
.hero-stat span { font-size: .85rem; color: var(--color-ink-soft); }

/* ---------- Generator ---------- */
.generator {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 24px;
  margin: 0 auto 32px;
  max-width: 880px;
}
.form-control {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-ink);
  background: var(--color-surface);
}
.form-control:focus { border-color: var(--color-primary); }
.generator textarea.form-control {
  min-height: 220px;
  resize: vertical;
}
.field label[for] { text-transform: none; letter-spacing: 0; font-size: .85rem; }
.word-count {
  text-align: right;
  font-size: .85rem;
  color: var(--color-ink-soft);
  margin: 6px 2px 18px;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}
@media (min-width: 640px) {
  .field-grid { grid-template-columns: repeat(4, 1fr); }
  .field-grid .field-lang,
  .field-grid .field-voice { grid-column: span 2; }
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field label {
  font-size: .8rem;
  font-weight: 700;
  color: var(--color-ink-soft);
  text-transform: uppercase;
  letter-spacing: .03em;
}
.field select {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-family: inherit;
  font-size: .95rem;
  background: var(--color-surface);
  color: var(--color-ink);
}
.field select:focus { border-color: var(--color-primary); }

.generator-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.icon { width: 18px; height: 18px; flex-shrink: 0; }

/* Play/pause icon swap, driven by app.js classList.replace("fa-circle-play","fa-circle-pause") */
#actionBtn { display: inline-flex; }
#actionBtn .icon-pause { display: none; }
#actionBtn.fa-circle-pause .icon-play { display: none; }
#actionBtn.fa-circle-pause .icon-pause { display: inline-flex; }

.gen-status {
  margin-top: 14px;
  font-size: .9rem;
  display: none;
  align-items: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
}
.gen-status.visible { display: flex; }
.gen-status.loading { background: var(--color-primary-light); color: var(--color-primary-dark); }
.gen-status.error { background: var(--color-error-bg); color: var(--color-error); }
.gen-status.success { background: var(--color-success-bg); color: var(--color-success); }

.spinner {
  width: 16px; height: 16px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin .7s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

#audioPlayer {
  width: 100%;
  margin-top: 16px;
}

/* ---------- Generic sections ---------- */
.section {
  padding: 36px 0;
}
.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 28px;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
@media (min-width: 640px) {
  .card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
  .card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
a.card {
  display: block;
  color: var(--color-ink);
  text-decoration: none;
  transition: box-shadow .15s ease, border-color .15s ease, transform .15s ease;
}
a.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  text-decoration: none;
}
a.card h3 { margin-bottom: .3em; }
a.card p { margin: 0; color: var(--color-primary-dark); font-weight: 600; font-size: .9rem; }
.card .icon-badge {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  color: var(--color-primary-dark);
}

/* How it works */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  counter-reset: step;
}
@media (min-width: 640px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 900px) {
  .steps { grid-template-columns: repeat(4, 1fr); }
}
.step {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  position: relative;
}
.step::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  margin-bottom: 12px;
}

/* Languages / voices highlight */
.lang-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.lang-pill {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--color-ink-soft);
}

/* SEO content */
.prose h2 { margin-top: 1.4em; }
.prose ul { padding-left: 1.2em; color: var(--color-ink-soft); }
.prose li { margin-bottom: .4em; }

/* FAQ */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 16px 4px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-family: inherit;
}
.faq-question .icon { transition: transform .2s ease; }
.faq-question[aria-expanded="true"] .icon { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .25s ease;
}
.faq-answer p, .faq-answer ul {
  padding: 0 4px 16px;
}

/* Footer — intentionally always dark, in both light and dark theme,
   using dedicated --color-footer-* variables decoupled from --color-ink
   (which flips between dark/light text depending on theme). */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 36px 0 20px;
  margin-top: 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 24px;
}
@media (min-width: 640px) {
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
}
.site-footer h4 { color: var(--color-footer-text-strong); }
.site-footer a { color: var(--color-footer-text); }
.site-footer a:hover { color: var(--color-footer-text-strong); }
.footer-links { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.footer-bottom {
  border-top: 1px solid var(--color-footer-border);
  padding-top: 16px;
  text-align: center;
  font-size: .85rem;
  color: var(--color-footer-muted);
}

/* Cookie banner (vanilla replacement) — same always-dark treatment as footer */
.cookie-banner {
  position: fixed;
  left: 16px; right: 16px; bottom: 16px;
  max-width: 640px;
  margin: 0 auto;
  background: var(--color-footer-bg);
  color: var(--color-footer-text-strong);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  box-shadow: var(--shadow-md);
  display: none;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  z-index: 200;
}
.cookie-banner.visible { display: flex; }
.cookie-banner p { color: var(--color-footer-text); margin: 0; flex: 1 1 260px; font-size: .9rem; }
.cookie-banner a { color: var(--color-primary); }

/* Mobile nav */
@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    order: 3;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px; }
  .nav-actions { order: 2; margin-left: auto; }
}

@media (max-width: 480px) {
  .generator { padding: 16px; }
  .generator-actions .btn { flex: 1 1 auto; justify-content: center; }
  .hero { padding: 28px 0 8px; }
}