/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #0d0b14;
  --bg-elevated: #16131f;
  --card: #1b1826;
  --text: #f3f1f8;
  --text-dim: #b7b2c6;
  --accent: #7c3aed;
  --accent-2: #ff3b6e;
  --accent-yellow: #ffe600;
  --border: #2c2838;
  --ok: #2fd480;
  --danger: #ff5c6c;
  --radius: 14px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --sans: 'Inter', system-ui, sans-serif;
  --display: 'Montserrat', system-ui, sans-serif;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f6fb;
    --bg-elevated: #ffffff;
    --card: #ffffff;
    --text: #171422;
    --text-dim: #5c5670;
    --border: #e5e1ef;
  }
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; overflow-x: clip; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video, canvas { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; line-height: 1.1; letter-spacing: -0.01em; font-family: var(--display); }
::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* =============================================================
   3. Utilities
   ============================================================= */
.wrap { max-width: 1180px; margin-inline: auto; padding-inline: 1.25rem; }
.skip-link {
  position: fixed; top: -100px; left: 1rem; padding: .6rem 1rem;
  background: var(--accent); color: #fff; z-index: 9999; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { top: 1rem; }

/* =============================================================
   4. Buttons
   ============================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .75rem 1.3rem; border-radius: 999px; font-weight: 600; font-size: .95rem;
  transition: transform .2s var(--ease-out), background .2s var(--ease-out), opacity .2s;
}
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; }
.btn-primary:hover { transform: translateY(-2px); }
.btn-secondary { background: var(--bg-elevated); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); }
.btn-ghost { background: transparent; color: var(--text-dim); }
.btn-ghost:hover { color: var(--text); }
.btn-lg { padding: 1rem 2rem; font-size: 1.05rem; }
.btn-sm { padding: .5rem 1rem; font-size: .85rem; }
.btn[disabled] { opacity: .5; pointer-events: none; }

/* =============================================================
   5. Header / Footer
   ============================================================= */
.site-header { padding-block: 1rem; border-bottom: 1px solid var(--border); }
.site-header-inner { display: flex; align-items: center; justify-content: space-between; }
.brand { font-family: var(--display); font-weight: 800; font-size: 1.2rem; }
.site-footer { border-top: 1px solid var(--border); padding-block: 2.5rem; margin-top: 4rem; }
.footer-inner { display: flex; flex-direction: column; gap: .6rem; color: var(--text-dim); font-size: .9rem; }
.footer-links { display: flex; gap: 1rem; }
.footer-links a:hover { color: var(--accent); }
.credits { font-size: .78rem; opacity: .7; }

/* =============================================================
   6. Hero
   ============================================================= */
.hero { padding-block: 3rem 1.5rem; text-align: center; }
.hero h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); max-width: 20ch; margin-inline: auto; }
.hero-sub { max-width: 62ch; margin: 1rem auto 0; color: var(--text-dim); font-size: 1.05rem; }

/* =============================================================
   7. Tool card
   ============================================================= */
.tool-section { padding-block: 1rem 2rem; }
.tool-card {
  background: var(--card); border: 1px solid var(--border); border-radius: 20px;
  padding: 1.5rem; box-shadow: 0 20px 60px rgba(0,0,0,.25);
}
@media (min-width: 720px) { .tool-card { padding: 2.25rem; } }

.dropzone {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .5rem;
  border: 2px dashed var(--border); border-radius: var(--radius); padding: 3rem 1.5rem;
  cursor: pointer; text-align: center; color: var(--text-dim);
  transition: border-color .2s var(--ease-out), background .2s var(--ease-out);
}
.dropzone:hover, .dropzone.is-dragover { border-color: var(--accent); background: rgba(124,58,237,.06); }
.dz-title { font-weight: 700; color: var(--text); font-size: 1.1rem; }
.dz-sub { font-size: .88rem; }
.privacy-badge { margin-top: 1.1rem; font-size: .88rem; color: var(--ok); text-align: center; }
.honest-limits { margin-top: .4rem; font-size: .82rem; color: var(--text-dim); text-align: center; }

.busy-box { text-align: center; padding: 2.5rem 1rem; }
.spinner {
  width: 42px; height: 42px; margin: 0 auto 1.2rem; border-radius: 50%;
  border: 4px solid var(--border); border-top-color: var(--accent);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.busy-status { font-weight: 600; margin-bottom: 1rem; }
.progress-track { height: 8px; border-radius: 999px; background: var(--bg-elevated); overflow: hidden; max-width: 420px; margin-inline: auto; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); width: 0%; transition: width .25s var(--ease-out); }

.error-msg { color: var(--danger); margin-bottom: 1rem; text-align: center; }

.tc-h3 { font-size: 1.02rem; margin-block: 1.4rem .6rem; }
.ready-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 960px) { .ready-grid { grid-template-columns: 1.15fr 0.85fr; } }

/* Transcript */
.transcript-box {
  display: flex; flex-wrap: wrap; gap: .35rem; padding: 1rem; border-radius: var(--radius);
  background: var(--bg-elevated); border: 1px solid var(--border); max-height: 220px; overflow-y: auto;
}
.word-chip {
  font: inherit; font-size: .92rem; background: transparent; border: 1px solid transparent;
  border-radius: 6px; padding: .15rem .3rem; color: var(--text); min-width: 1.6ch;
}
.word-chip:hover, .word-chip:focus { border-color: var(--accent); background: var(--card); outline: none; }

/* Trim */
.trim-box { padding: .75rem 0 .25rem; }
.trim-track {
  position: relative; height: 8px; border-radius: 999px; background: var(--bg-elevated);
  border: 1px solid var(--border); margin-bottom: .6rem;
}
.trim-range { position: absolute; top: 0; bottom: 0; background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 999px; }
.trim-input {
  position: relative; width: 100%; margin-top: -18px; -webkit-appearance: none; appearance: none;
  background: transparent; pointer-events: none; height: 18px;
}
.trim-input::-webkit-slider-thumb {
  -webkit-appearance: none; pointer-events: auto; width: 18px; height: 18px; border-radius: 50%;
  background: #fff; border: 3px solid var(--accent); cursor: grab; margin-top: 0;
}
.trim-input::-moz-range-thumb { pointer-events: auto; width: 16px; height: 16px; border-radius: 50%; background: #fff; border: 3px solid var(--accent); cursor: grab; }
.trim-input::-webkit-slider-runnable-track { background: transparent; height: 18px; }
.trim-meta { font-size: .85rem; color: var(--text-dim); margin-top: .3rem; }

/* Controls */
.controls-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .9rem; }
@media (min-width: 540px) { .controls-grid { grid-template-columns: repeat(3, 1fr); } }
.ctrl { display: flex; flex-direction: column; gap: .35rem; font-size: .82rem; color: var(--text-dim); }
.ctrl select, .ctrl input[type="color"] {
  font: inherit; padding: .5rem .6rem; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg-elevated); color: var(--text);
}
.ctrl input[type="color"] { padding: .25rem; height: 2.4rem; }
.controls-row { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1rem; }
.chk { display: flex; align-items: center; gap: .5rem; font-size: .88rem; color: var(--text-dim); }

.export-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; align-items: center; }

/* =============================================================
   8. Phone mockup preview
   ============================================================= */
.ready-col-preview { display: flex; flex-direction: column; align-items: center; }
.phone-mock {
  position: relative; width: min(260px, 68vw); aspect-ratio: 9 / 16;
  border-radius: 34px; overflow: hidden; background: #000;
  border: 8px solid #111; box-shadow: 0 25px 50px rgba(0,0,0,.4);
}
.phone-notch {
  position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 40%; height: 18px; background: #111; border-radius: 0 0 12px 12px; z-index: 3;
}
.phone-canvas { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.phone-ui { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.phone-icons {
  position: absolute; right: 8px; bottom: 22%; display: flex; flex-direction: column; gap: 14px;
  align-items: center; color: #fff; font-size: 1.3rem; text-shadow: 0 1px 4px rgba(0,0,0,.6);
}
.phone-icons span { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.phone-icons b { font-size: .58rem; font-weight: 600; }
.phone-caption {
  position: absolute; left: 12px; right: 60px; bottom: 6%; color: #fff; font-size: .68rem;
  text-shadow: 0 1px 4px rgba(0,0,0,.7); font-weight: 600;
}
.phone-play {
  position: absolute; inset: 0; z-index: 4; display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: #fff; background: rgba(0,0,0,0); opacity: .85;
}
.preview-hint { font-size: .8rem; color: var(--text-dim); text-align: center; margin-top: .8rem; max-width: 260px; }

/* =============================================================
   9. Content sections
   ============================================================= */
.how-it-works, .use-cases, .content-seo, .faq { padding-block: 3rem; }
.how-it-works h2, .use-cases h2, .content-seo h2, .faq h2 { font-size: clamp(1.4rem, 3vw, 2rem); text-align: center; margin-bottom: 2rem; }
.steps-grid, .uc-grid { display: grid; grid-template-columns: 1fr; gap: 1.2rem; }
@media (min-width: 720px) { .steps-grid { grid-template-columns: repeat(3, 1fr); } .uc-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .uc-grid { grid-template-columns: repeat(4, 1fr); } }
.step-card, .uc-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem;
}
.step-num {
  display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px;
  border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff;
  font-weight: 800; margin-bottom: .8rem;
}
.step-card h3, .uc-card h3 { font-size: 1.05rem; margin-bottom: .4rem; }
.step-card p, .uc-card p { color: var(--text-dim); font-size: .92rem; }

.content-seo { max-width: 780px; margin-inline: auto; }
.content-seo p { color: var(--text-dim); margin-bottom: 1rem; }

.faq details {
  border-bottom: 1px solid var(--border); padding-block: 1rem;
}
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--text-dim); margin-top: .6rem; }

/* =============================================================
   10. Ad slots (placeholders)
   ============================================================= */
.ad-slot {
  min-height: 90px; border: 1px dashed var(--border); border-radius: 10px;
  display: flex; align-items: center; justify-content: center; color: var(--text-dim);
  font-size: .8rem; letter-spacing: .08em; margin-block: 1.5rem; background: var(--bg-elevated);
}
.ad-slot-incontent { min-height: 250px; }

.ad-dialog {
  border: none; border-radius: 16px; padding: 1.5rem; max-width: 360px; width: 90%;
  background: var(--card); color: var(--text);
}
.ad-dialog::backdrop { background: rgba(0,0,0,.6); }
.ad-dialog-close {
  position: absolute; top: 10px; right: 14px; font-size: 1.3rem; color: var(--text-dim);
}
.ad-dialog-slot {
  min-height: 200px; border: 1px dashed var(--border); border-radius: 10px;
  display: flex; align-items: center; justify-content: center; color: var(--text-dim);
  margin-block: .5rem 1rem;
}

.ad-corner {
  position: fixed; bottom: 1rem; left: 1rem; z-index: 500;
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  padding: .8rem 2.2rem .8rem 1rem; font-size: .78rem; color: var(--text-dim);
  box-shadow: 0 10px 30px rgba(0,0,0,.3);
}
.ad-corner-close { position: absolute; top: 4px; right: 8px; font-size: 1rem; color: var(--text-dim); }

/* =============================================================
   11. Responsive niceties
   ============================================================= */
@media (max-width: 539px) {
  .tool-card { border-radius: 14px; }
  .export-row { flex-direction: column; align-items: stretch; }
}

/* =============================================================
   12. Reduced motion — solo lo intrusivo
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}