/* =========================================================
   Zaveloq - design system
   ========================================================= */

:root {
  /* barvy - teplá terakotová/zelená paleta (odlišná od typicky "modrých" prekladacu) */
  --color-bg: #fbf9f6;
  --color-surface: #ffffff;
  --color-surface-alt: #f3efe8;
  --color-border: #e6e0d6;
  --color-text: #23201c;
  --color-text-muted: #6b6459;
  --color-text-faint: #9c9488;

  --color-primary: #c6552d;
  --color-primary-dark: #a8431f;
  --color-primary-light: #fbe7dc;
  --color-accent: #2f6e5c;
  --color-accent-light: #e3efe9;

  --color-success: #2f6e5c;
  --color-danger: #c23b2b;
  --color-danger-bg: #fbeae7;

  --shadow-sm: 0 1px 2px rgba(35, 32, 28, 0.07);
  --shadow-md: 0 6px 18px rgba(35, 32, 28, 0.09);
  --shadow-lg: 0 18px 40px rgba(35, 32, 28, 0.14);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --container-width: 1160px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #1b1815;
    --color-surface: #24211d;
    --color-surface-alt: #2c2822;
    --color-border: #3a352e;
    --color-text: #f2ede6;
    --color-text-muted: #c9c1b6;
    --color-text-faint: #8f887c;
    --color-primary-light: #3a2418;
    --color-accent-light: #16302a;
  }
}

[data-theme="dark"] {
  --color-bg: #1b1815;
  --color-surface: #24211d;
  --color-surface-alt: #2c2822;
  --color-border: #3a352e;
  --color-text: #f2ede6;
  --color-text-muted: #c9c1b6;
  --color-text-faint: #8f887c;
  --color-primary-light: #3a2418;
  --color-accent-light: #16302a;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Navbar ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
}
.brand__mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 0.95rem;
}
.lang-switcher {
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 10px;
  font-family: inherit;
  font-size: 0.82rem;
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
}
.lang-switcher:hover { color: var(--color-text); border-color: var(--color-text-faint); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.15s ease;
}
.nav-links a:hover,
.nav-links a.is-active { color: var(--color-text); }
.navbar__actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-sm);
  padding: 11px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.15s ease, color 0.15s ease;
  font-family: inherit;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-primary-dark); box-shadow: var(--shadow-md); }
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-ghost:hover { background: var(--color-surface-alt); }
.btn-accent {
  background: var(--color-accent);
  color: #fff;
}
.btn-accent:hover { filter: brightness(0.94); }
.btn-block { width: 100%; }
.btn-lg { padding: 14px 26px; font-size: 1.02rem; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

/* ---------- Hero ---------- */
.hero {
  padding: 88px 0 64px;
  text-align: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(2.1rem, 4.4vw, 3.4rem);
  line-height: 1.12;
  margin: 0 0 20px;
  letter-spacing: -0.02em;
}
.hero p.lead {
  max-width: 620px;
  margin: 0 auto 34px;
  color: var(--color-text-muted);
  font-size: 1.12rem;
}
.hero__actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.hero__note { color: var(--color-text-faint); font-size: 0.88rem; }

.lang-strip {
  margin-top: 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}
.lang-chip {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  box-shadow: var(--shadow-sm);
}

/* ---------- Sections ---------- */
section { padding: 72px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 14px;
  letter-spacing: -0.01em;
}
.section-head p { color: var(--color-text-muted); font-size: 1.05rem; margin: 0; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}
.feature-card__icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.2rem;
}
.feature-card h3 { margin: 0 0 8px; font-size: 1.08rem; }
.feature-card p { margin: 0; color: var(--color-text-muted); font-size: 0.95rem; }

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
}
.step { text-align: center; }
.step__num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-text);
  color: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin: 0 auto 16px;
}
.step h3 { margin: 0 0 8px; font-size: 1rem; }
.step p { margin: 0; color: var(--color-text-muted); font-size: 0.92rem; }

/* ---------- Translator app ---------- */
.translator-wrap { padding: 40px 0 80px; }
.translator-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.translator-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  flex-wrap: wrap;
}
.lang-select {
  flex: 1;
  min-width: 160px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.94rem;
}
.swap-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: transform 0.2s ease, background 0.15s ease;
}
.swap-btn:hover { background: var(--color-surface-alt); color: var(--color-text); }
.swap-btn.is-spinning { transform: rotate(180deg); }

.translator-panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
@media (max-width: 760px) {
  .translator-panes { grid-template-columns: 1fr; }
  .translator-panes .pane:first-child { border-bottom: 1px solid var(--color-border); }
}
.pane { position: relative; }
.pane:first-child { border-right: 1px solid var(--color-border); }
.pane textarea {
  width: 100%;
  min-height: 260px;
  border: none;
  outline: none;
  resize: vertical;
  padding: 22px;
  font-family: inherit;
  font-size: 1.05rem;
  color: var(--color-text);
  background: transparent;
  line-height: 1.6;
}
.pane textarea::placeholder { color: var(--color-text-faint); }
.pane--target textarea { background: var(--color-surface-alt); }
.pane__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px 16px;
  font-size: 0.82rem;
  color: var(--color-text-faint);
}
.pane__tools { display: flex; gap: 6px; }
.icon-btn {
  border: none;
  background: transparent;
  color: var(--color-text-faint);
  cursor: pointer;
  padding: 6px 8px;
  border-radius: 6px;
  font-size: 0.9rem;
}
.icon-btn:hover { background: var(--color-surface-alt); color: var(--color-text); }

.translator-options {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px 20px;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}
.translator-options label { display: flex; align-items: center; gap: 6px; }
.translator-options select {
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 6px 8px;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
}
.engine-badge {
  margin-left: auto;
  background: var(--color-accent-light);
  color: var(--color-accent);
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.78rem;
}

/* ---------- Mode tabs (Text / Dokument) ---------- */
.mode-tabs {
  display: flex;
  gap: 4px;
  padding: 14px 20px 0;
  background: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border);
}
.mode-tab {
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 10px 18px;
  border-radius: 10px 10px 0 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transform: translateY(1px);
}
.mode-tab:hover { color: var(--color-text); }
.mode-tab.is-active {
  background: var(--color-surface);
  color: var(--color-primary);
  box-shadow: 0 -1px 0 var(--color-surface) inset;
}
.mode-panel { display: none; }
.mode-panel.is-active { display: block; }

/* ---------- Document upload ---------- */
.doc-wrap { padding: 28px; }
.dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 44px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
  background: var(--color-surface-alt);
}
.dropzone:hover, .dropzone.is-dragover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.dropzone__icon { font-size: 2.2rem; margin-bottom: 10px; }
.dropzone__title { font-weight: 600; margin-bottom: 4px; }
.dropzone__hint { color: var(--color-text-faint); font-size: 0.85rem; }
.dropzone input[type="file"] { display: none; }

.doc-file-info {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  font-size: 0.92rem;
}
.doc-file-info.is-visible { display: flex; }
.doc-file-info__name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.doc-file-info__remove {
  border: none;
  background: transparent;
  color: var(--color-text-faint);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
}
.doc-file-info__remove:hover { color: var(--color-danger); }

.doc-options {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 20px;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}
.doc-options label { display: flex; align-items: center; gap: 6px; }
.doc-options select {
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 6px 8px;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
}
.doc-actions { margin-top: 22px; display: flex; gap: 12px; flex-wrap: wrap; }
.doc-result {
  margin-top: 22px;
  padding: 18px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-light);
  border: 1px solid var(--color-border);
  display: none;
}
.doc-result.is-visible { display: block; }
.doc-result__label { font-weight: 600; color: var(--color-accent); margin-bottom: 8px; font-size: 0.88rem; }
.doc-result__preview {
  max-height: 220px;
  overflow-y: auto;
  white-space: pre-wrap;
  font-size: 0.92rem;
  color: var(--color-text);
  margin-bottom: 14px;
}

.status-banner {
  margin: 18px 0 0;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  display: none;
}
.status-banner.is-visible { display: block; }
.status-banner.is-error { background: var(--color-danger-bg); color: var(--color-danger); }
.status-banner.is-info { background: var(--color-primary-light); color: var(--color-primary); }

/* ---------- Pricing ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  align-items: stretch;
}
.price-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}
.price-card.is-featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  position: relative;
}
.price-card__badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 999px;
}
.price-card h3 { margin: 6px 0 4px; font-size: 1.1rem; }
.price-card .price { font-size: 2.2rem; font-weight: 800; margin: 10px 0 4px; }
.price-card .price span { font-size: 1rem; font-weight: 500; color: var(--color-text-muted); }
.price-card .price-note { color: var(--color-text-faint); font-size: 0.85rem; margin-bottom: 22px; }
.price-card ul { list-style: none; margin: 0 0 26px; padding: 0; flex: 1; }
.price-card li {
  padding: 9px 0;
  border-top: 1px solid var(--color-border);
  font-size: 0.92rem;
  color: var(--color-text-muted);
  display: flex;
  gap: 8px;
}
.price-card li:first-child { border-top: none; }
.price-card li::before { content: "✓"; color: var(--color-accent); font-weight: 700; }

.pricing-note {
  text-align: center;
  color: var(--color-text-faint);
  font-size: 0.88rem;
  margin-top: 28px;
}

/* ---------- FAQ ---------- */
.faq { max-width: 780px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 20px 0;
}
.faq-item h3 { margin: 0 0 8px; font-size: 1rem; }
.faq-item p { margin: 0; color: var(--color-text-muted); font-size: 0.94rem; }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  text-align: center;
  color: #fff;
}
.cta-band h2 { margin: 0 0 12px; font-size: clamp(1.5rem, 3vw, 2rem); }
.cta-band p { margin: 0 0 26px; opacity: 0.92; }
.cta-band .btn-primary { background: #fff; color: var(--color-primary-dark); }
.cta-band .btn-primary:hover { background: #f2f2ff; }

/* ---------- Footer ---------- */
footer {
  border-top: 1px solid var(--color-border);
  padding: 48px 0 32px;
  color: var(--color-text-faint);
  font-size: 0.88rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h4 { color: var(--color-text); font-size: 0.88rem; margin: 0 0 14px; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 9px; }
.footer-grid a { text-decoration: none; color: var(--color-text-faint); }
.footer-grid a:hover { color: var(--color-text); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Hero globe/network decoration ---------- */
.hero { position: relative; overflow: hidden; }
.hero .container { position: relative; z-index: 1; }
.hero-globe {
  position: absolute;
  top: 50%;
  right: -150px;
  transform: translateY(-50%);
  width: 560px;
  height: 560px;
  opacity: 0.55;
  pointer-events: none;
  z-index: 0;
}
@media (max-width: 900px) {
  .hero-globe { width: 380px; height: 380px; right: -170px; opacity: 0.4; }
}
@media (max-width: 620px) {
  .hero-globe { width: 280px; height: 280px; right: -140px; top: 30px; transform: none; opacity: 0.3; }
}

/* ---------- Utility ---------- */
.demo-banner {
  background: #fff8e6;
  color: #8a6100;
  text-align: center;
  padding: 10px 16px;
  font-size: 0.86rem;
  border-bottom: 1px solid #f0dca3;
}
[data-theme="dark"] .demo-banner { background: #2a2410; color: #f2c94c; border-color: #4a3f14; }

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Voice interpreter (AI Tlumočník) ---------- */
.voice-wrap { padding: 40px 0 80px; }
.voice-intro { text-align: center; max-width: 640px; margin: 0 auto 32px; }
.voice-intro h1 { margin: 0 0 10px; font-size: clamp(1.6rem, 3vw, 2.2rem); }
.voice-intro p { color: var(--color-text-muted); margin: 0; }

.voice-unsupported {
  max-width: 640px;
  margin: 0 auto 24px;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  background: var(--color-danger-bg);
  color: var(--color-danger);
  text-align: center;
  display: none;
}
.voice-unsupported.is-visible { display: block; }

.voice-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}
@media (max-width: 760px) {
  .voice-panels { grid-template-columns: 1fr; }
}
.voice-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 28px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.voice-panel__label {
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-faint);
}
.voice-panel select.lang-select { width: 100%; max-width: 260px; }

.mic-btn {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: transform 0.15s ease;
  position: relative;
}
.mic-btn:hover { transform: scale(1.04); }
.mic-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.mic-btn.is-listening {
  animation: mic-pulse 1.4s ease-in-out infinite;
  background: linear-gradient(135deg, var(--color-danger), var(--color-primary));
}
@keyframes mic-pulse {
  0% { box-shadow: 0 0 0 0 rgba(198, 85, 45, 0.45); }
  70% { box-shadow: 0 0 0 18px rgba(198, 85, 45, 0); }
  100% { box-shadow: 0 0 0 0 rgba(198, 85, 45, 0); }
}
.voice-panel__status {
  min-height: 1.3em;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.voice-log {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 8px 8px;
  max-height: 420px;
  overflow-y: auto;
}
.voice-log__empty {
  text-align: center;
  color: var(--color-text-faint);
  padding: 40px 20px;
  font-size: 0.92rem;
}
.voice-bubble {
  max-width: 78%;
  margin: 10px 14px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
}
.voice-bubble.is-b { margin-left: auto; background: var(--color-accent-light); }
.voice-bubble__speaker {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-faint);
  margin-bottom: 4px;
}
.voice-bubble__original { color: var(--color-text-muted); font-size: 0.88rem; margin-bottom: 4px; }
.voice-bubble__translated { color: var(--color-text); font-weight: 500; }

.voice-log__actions { text-align: center; margin-top: 16px; }

@media (max-width: 760px) {
  .nav-links { display: none; }
}