/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --accent:       #0284C7;   /* azul cielo — primario */
  --accent-dark:  #0369A1;
  --accent-soft:  #E0F2FE;
  --accent-2:     #EA580C;   /* naranja — secundario (avisos) */
  --accent-2-ink: #C2410C;
  --accent-2-soft:#FFEDD5;

  --on-accent: #FFFFFF;

  --bg:        #F7FAFD;
  --bg-2:      #EEF4FA;
  --card:      #FFFFFF;
  --text:      #0F1B24;
  --text-soft: #55697A;
  --border:    #DCE6F0;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --serif: "Fredoka", ui-rounded, system-ui, sans-serif;
  --sans:  "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent:       #38BDF8;
    --accent-dark:  #7DD3FC;
    --accent-soft:  #0C2436;
    --accent-2:     #FB923C;
    --accent-2-ink: #FDBA74;
    --accent-2-soft:#3A2410;

    --on-accent: #04151F;

    --bg:        #0A1218;
    --bg-2:      #101B24;
    --card:      #16222C;
    --text:      #EAF2F8;
    --text-soft: #9BB0C0;
    --border:    #223140;
  }
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}
img, svg, video { display: block; max-width: 100%; }
[hidden] { display: none !important; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.1; font-family: var(--serif); font-weight: 600; }
::selection { background: var(--accent); color: var(--on-accent); }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* =============================================================
   3. Utilities
   ============================================================= */
.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--card); color: var(--text);
  z-index: 9999; border-radius: 8px; font-weight: 600;
  box-shadow: 0 4px 16px rgba(0,0,0,.15);
}
.skip-link:focus { top: 1rem; }

.wrap { width: 100%; max-width: 1100px; margin-inline: auto; padding-inline: 1.25rem; }
.wrap--narrow { max-width: 760px; }

/* =============================================================
   4. Typography
   ============================================================= */
.section-title {
  font-size: clamp(1.9rem, 5vw, 2.7rem);
  letter-spacing: -0.01em;
  text-align: center;
  margin-inline: auto;
  max-width: 20ch;
}
.section-sub {
  text-align: center;
  color: var(--text-soft);
  max-width: 46ch;
  margin: .7rem auto 0;
  font-size: 1.05rem;
}
.section-title-sm {
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: 1.4rem;
}

/* =============================================================
   5. Components
   ============================================================= */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: .5rem;
  padding: .9rem 1.6rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1rem;
  transition: transform .2s var(--ease-out), background .2s var(--ease-out), box-shadow .2s var(--ease-out);
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary {
  background: var(--accent); color: var(--on-accent);
  box-shadow: 0 6px 18px color-mix(in srgb, var(--accent) 35%, transparent);
}
.btn-primary:hover:not(:disabled) { background: var(--accent-dark); transform: translateY(-1px); }
.btn-ghost {
  background: var(--bg-2); color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: .5rem 1rem; font-size: .85rem; }

/* =============================================================
   6. Header / footer
   ============================================================= */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header-in {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding-block: .8rem;
}
.brand { display: flex; align-items: center; gap: .5rem; color: var(--accent); }
.brand-name { font-family: var(--serif); font-weight: 700; font-size: 1.25rem; color: var(--text); }
.site-nav { display: flex; gap: 1.4rem; font-weight: 600; font-size: .92rem; }
.site-nav a { color: var(--text-soft); transition: color .2s var(--ease-out); }
.site-nav a:hover { color: var(--accent); }
@media (max-width: 719px) { .site-nav { display: none; } }

.lang-switch { display: flex; align-items: center; gap: .12rem; margin-left: auto; flex-wrap: nowrap; }
.site-nav + .lang-switch { margin-left: .35rem; }
.lang-switch a {
  display: inline-block;
  font-size: .74rem; font-weight: 700; letter-spacing: .03em;
  line-height: 1;
  color: var(--text-soft);
  padding: .34rem .38rem;
  border-radius: 8px;
  transition: color .2s var(--ease-out), background .2s var(--ease-out);
}
.lang-switch a:hover { color: var(--accent); background: var(--accent-soft); }
.lang-switch a.is-on { color: var(--on-accent); background: var(--accent); }

.site-footer { border-top: 1px solid var(--border); margin-top: 3rem; padding-block: 2rem; }
.site-footer-in { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .8rem; }
.foot-brand { color: var(--text-soft); font-size: .92rem; }
.foot-nav { display: flex; gap: 1.2rem; font-size: .92rem; font-weight: 600; }
.foot-nav a:hover { color: var(--accent); }
.foot-note { width: 100%; color: var(--text-soft); font-size: .82rem; margin-top: .4rem; }

/* =============================================================
   7. Sections
   ============================================================= */
.section { padding-block: 2.6rem; }
.section--tool { padding-top: 2.2rem; }

/* =============================================================
   8. Tool card
   ============================================================= */
.tool-card {
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  margin-top: 1.8rem;
  box-shadow: 0 20px 50px -30px rgba(0,0,0,.25);
}
.tool-card-body { display: flex; flex-direction: column; gap: 1.2rem; }

.dropzone {
  display: flex; flex-direction: column; align-items: center; gap: .5rem;
  text-align: center;
  padding: 2.4rem 1.5rem;
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-2);
  color: var(--text-soft);
  cursor: pointer;
  transition: border-color .2s var(--ease-out), background .2s var(--ease-out);
}
.dropzone svg { color: var(--accent); }
.dropzone:hover, .dropzone:focus-visible, .dropzone.is-drag {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.dropzone-title { font-weight: 700; font-size: 1.1rem; color: var(--text); font-family: var(--serif); }
.dropzone-sub { font-size: .88rem; }

/* Resize controls */
.resize-zone { display: flex; flex-direction: column; gap: 1.1rem; }

.resize-preview {
  display: flex; flex-direction: column; align-items: center; gap: .5rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  background: var(--bg-2);
  border: 1.5px solid var(--border);
}
.resize-preview-img { max-height: 260px; width: auto; border-radius: var(--radius-sm); }
.resize-orig-info { font-size: .85rem; color: var(--text-soft); text-align: center; }

.mode-tabs {
  display: flex; gap: .4rem;
  background: var(--bg-2);
  padding: .3rem;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border);
}
.mode-tab {
  flex: 1;
  padding: .6rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: .92rem;
  color: var(--text-soft);
  transition: background .2s var(--ease-out), color .2s var(--ease-out);
}
.mode-tab.is-on { background: var(--card); color: var(--accent); box-shadow: 0 2px 8px rgba(0,0,0,.08); }

.resize-fields { display: flex; flex-direction: column; gap: .8rem; }

.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .9rem; }
.form-field { display: flex; flex-direction: column; gap: .3rem; }
.form-field label { font-size: .8rem; font-weight: 600; color: var(--text-soft); }
.form-field input[type="text"], .form-field select {
  font: inherit;
  font-size: .95rem;
  padding: .65rem .8rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: var(--bg-2);
  color: var(--text);
  transition: border-color .2s var(--ease-out), background .2s var(--ease-out);
  width: 100%;
}
.form-field input[type="text"]:focus, .form-field select:focus {
  outline: none; border-color: var(--accent); background: var(--card);
}
.form-field input[type="range"] { width: 100%; accent-color: var(--accent); }
.form-hint { font-size: .78rem; color: var(--text-soft); }

.lock-check {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .88rem; font-weight: 600; color: var(--text-soft);
  cursor: pointer;
  width: fit-content;
}
.lock-check input { accent-color: var(--accent); width: 16px; height: 16px; }
.lock-icon { color: var(--accent); }

.pct-presets { display: flex; gap: .5rem; flex-wrap: wrap; }

.resize-target-info {
  text-align: center;
  font-size: .92rem;
  font-weight: 700;
  color: var(--accent-dark);
  padding: .5rem;
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
}

.btn-resize { width: 100%; }

.result-actions { display: flex; gap: .8rem; flex-wrap: wrap; justify-content: center; }

.tool-error { display: flex; flex-direction: column; align-items: center; gap: .8rem; text-align: center; padding: 1rem 0; }
.tool-error p { color: var(--accent-2-ink); font-weight: 600; }

.privacy-badge {
  text-align: center;
  color: var(--text-soft);
  font-size: .9rem;
  margin-top: 1rem;
}

/* =============================================================
   9. Ad slots
   ============================================================= */
.ad-slot {
  min-height: 90px;
  margin-block: 1.8rem;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-soft);
}
.ad-slot-label { font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; }

/* =============================================================
   10. Steps / prose / FAQ / more-tools
   ============================================================= */
.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
  margin-bottom: 2.6rem;
}
@media (max-width: 719px) { .steps { grid-template-columns: 1fr; } }
.step { display: flex; flex-direction: column; gap: .5rem; }
.step svg { color: var(--accent); }
.step h3 { font-size: 1.05rem; }
.step p { color: var(--text-soft); font-size: .92rem; }

.prose { display: flex; flex-direction: column; gap: 1rem; }
.prose h2 { font-size: 1.4rem; margin-top: .6rem; }
.prose h3 { font-size: 1.1rem; margin-top: .4rem; }
.prose p { color: var(--text-soft); }

.faq-list { display: flex; flex-direction: column; gap: .6rem; }
.faq-item {
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .9rem 1.1rem;
  background: var(--card);
}
.faq-item summary {
  cursor: pointer; font-weight: 700; list-style: none;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; font-size: 1.3rem; color: var(--accent); flex-shrink: 0;
  transition: transform .2s var(--ease-out);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { color: var(--text-soft); margin-top: .6rem; font-size: .93rem; }

.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1rem; }
.tool-link-card {
  display: flex; flex-direction: column; gap: .3rem;
  padding: 1.1rem 1.2rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--card);
  transition: border-color .2s var(--ease-out), transform .2s var(--ease-out);
}
.tool-link-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.tool-link-name { font-weight: 700; color: var(--accent-dark); }
.tool-link-desc { font-size: .85rem; color: var(--text-soft); }

/* =============================================================
   11. Effects — state machine
   ============================================================= */
.tool-card[data-state="idle"] .tool-error,
.tool-card[data-state="ready"] .tool-error,
.tool-card[data-state="working"] .tool-error,
.tool-card[data-state="done"] .tool-error { display: none; }
.tool-card[data-state="error"] .resize-zone { display: none; }

.tool-card[data-state="ready"] .dropzone,
.tool-card[data-state="working"] .dropzone,
.tool-card[data-state="done"] .dropzone,
.tool-card[data-state="error"] .dropzone { opacity: .5; pointer-events: none; }

.tool-card[data-state="working"] .btn-resize { opacity: .7; pointer-events: none; }

/* =============================================================
   12. Responsive
   ============================================================= */
@media (max-width: 639px) {
  .form-grid { grid-template-columns: 1fr; }
}
@media (min-width: 720px) {
  .tool-card { padding: 2.2rem; }
}

/* =============================================================
   13. Reduced-motion
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  .mode-tab { transition: none; }
  .tool-link-card { transition: none; }
}