/* ============================================
   HERRAMIENTAS// — Design tokens
   Concepto: catálogo de herramientas estilo plano técnico (blueprint).
   ============================================ */
:root {
  --paper: #EEF2F4;
  --paper-raised: #FFFFFF;
  --ink: #17232B;
  --ink-soft: #4C5A63;
  --line: #C9D3D8;
  --line-strong: #9FB0B8;
  --amber: #E8962E;
  --amber-ink: #7A4A0F;
  --teal: #1F6F6B;
  --teal-soft: #E4F0EF;
  --radius: 10px;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --display: "Space Grotesk", var(--sans);
}

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

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background-color: var(--paper);
  line-height: 1.5;
}

a { color: var(--teal); }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
}

.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  background: var(--paper-raised);
  border-bottom: 1px solid var(--line-strong);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 18px; padding-bottom: 18px;
}
.logo {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.logo .mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  background: var(--teal);
  border-radius: 7px;
  color: #fff;
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 700;
}
.back-link {
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-soft);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.back-link:hover { color: var(--teal); }
.back-link svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; }
.site-nav a {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--ink-soft);
  text-decoration: none;
  margin-left: 20px;
}
.site-nav a:hover { color: var(--teal); }

/* Hero */
.hero { padding: 56px 0 40px; }
.eyebrow {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 14px;
  display: block;
}
h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.hero p.lead {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: none;
  margin: 0;
}

/* Tool catalog grid */
.catalog {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding: 8px 0 56px;
}
@media (max-width: 640px) {
  .catalog { grid-template-columns: 1fr; }
}
.tool-card {
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 16px 20px;
  text-decoration: none;
  color: var(--ink);
  display: block;
  transition: transform .15s ease, box-shadow .15s ease;
  position: relative;
}
.tool-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(23,35,43,0.10);
}
.card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.icon-badge {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}
.icon-badge.teal { background: var(--teal-soft); color: var(--teal); }
.icon-badge.amber { background: #FBEBD3; color: var(--amber-ink); }
.icon-badge svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 1.8; }
.tool-card h3 {
  font-family: var(--display);
  margin: 0 0 8px;
  font-size: 1.25rem;
}
.tool-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}
.tool-card .go {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--amber-ink);
  margin-top: 14px;
  display: inline-block;
}

/* Tool page panel */
.tool-panel {
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 32px;
  margin: 32px 0;
}
.output-display {
  font-family: var(--mono);
  font-size: 1.4rem;
  background: var(--ink);
  color: #EAF4F2;
  padding: 20px;
  border-radius: 8px;
  word-break: break-all;
  margin: 18px 0;
  min-height: 1.6em;
}
.controls { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 20px 0; }
@media (max-width: 600px) { .controls { grid-template-columns: 1fr; } }
.control-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.control-row label { font-size: 0.95rem; }
input[type="range"] { width: 100%; accent-color: var(--teal); }
input[type="checkbox"] { accent-color: var(--teal); width: 18px; height: 18px; }

.btn {
  font-family: var(--mono);
  font-size: 0.9rem;
  border: none;
  border-radius: 8px;
  padding: 12px 20px;
  cursor: pointer;
  font-weight: 600;
}
.btn-primary { background: var(--amber); color: var(--ink); }
.btn-primary:hover { background: #d6862a; }
.btn-secondary { background: var(--teal-soft); color: var(--teal); }
.btn-secondary:hover { background: #d5e8e6; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }

.strength-bar {
  height: 6px; border-radius: 999px; background: var(--line);
  overflow: hidden; margin-top: 6px;
}
.strength-fill { height: 100%; width: 0%; background: var(--amber); transition: width .2s, background .2s; }

/* Explainer + FAQ */
.explainer { padding: 2px 0 6px; max-width: none; }
.explainer h2 { font-family: var(--display); font-size: 1.5rem; margin: 8px 0 6px; }
.explainer p { margin: 0 0 6px; }
.faq-item { border-top: 1px solid var(--line-strong); padding: 12px 0; }
.faq-item h3 { font-family: var(--display); font-size: 1.05rem; margin: 0 0 8px; }
.faq-item p { margin: 0; color: var(--ink-soft); }

/* Ad slots (visually marked while building, invisible once real ads load) */
.ad-slot {
  border: 1px dashed var(--line-strong);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.75rem;
  text-align: center;
  padding: 14px;
  margin: 24px 0;
  border-radius: 8px;
}

/* Comment / feedback form */
.feedback-panel {
  background: var(--teal-soft);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin: 16px 0 40px;
}
.feedback-panel h2 {
  font-family: var(--display);
  font-size: 1.3rem;
  margin: 0 0 6px;
}
.feedback-panel .sub {
  color: var(--ink-soft);
  font-size: 0.92rem;
  margin: 0 0 20px;
}
.tipo-toggle {
  display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap;
}
.tipo-toggle label {
  font-family: var(--mono);
  font-size: 0.82rem;
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
}
.tipo-toggle input { margin-right: 6px; accent-color: var(--teal); }
.feedback-panel textarea,
.feedback-panel input[type="email"] {
  width: 100%;
  font-family: var(--sans);
  font-size: 0.95rem;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 12px;
  background: var(--paper-raised);
  color: var(--ink);
}
.feedback-panel textarea { min-height: 90px; resize: vertical; }
.feedback-panel .hint {
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin: -6px 0 14px;
}
.feedback-panel .website-trap { position: absolute; left: -9999px; opacity: 0; }
#commentStatus {
  font-family: var(--mono);
  font-size: 0.85rem;
  margin-top: 10px;
  color: var(--teal);
}

/* Drop zone (PDF tool) */
.drop-zone {
  border: 2px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 36px 20px;
  text-align: center;
  margin: 20px 0;
  transition: border-color .15s, background .15s;
}
.drop-zone.drag-over {
  border-color: var(--teal);
  background: var(--teal-soft);
}
.drop-icon {
  width: 36px; height: 36px;
  stroke: var(--ink-soft); fill: none; stroke-width: 1.6;
  margin-bottom: 6px;
}
.hint-small {
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 12px;
}
.file-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
}
.file-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 8px;
  font-size: 0.92rem;
}
.file-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-size {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
}
.file-controls { display: flex; gap: 4px; }
.file-controls button {
  border: 1px solid var(--line-strong);
  background: var(--paper);
  border-radius: 6px;
  width: 30px; height: 30px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--ink);
}
.file-controls button:hover:not(:disabled) { background: var(--teal-soft); }
.file-controls button:disabled { opacity: 0.35; cursor: default; }
.merge-status {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--teal);
  min-height: 1.4em;
}
.merge-status.warn { color: var(--amber-ink); }
@keyframes pulse-highlight {
  0%, 100% { box-shadow: 0 0 0 0 rgba(232,150,46,0); }
  50% { box-shadow: 0 0 0 6px rgba(232,150,46,0.45); }
}
.highlight-pulse {
  animation: pulse-highlight 0.7s ease-in-out 2;
}

/* Input fields (shared by IMC + birthday) */
.input-field { display: flex; flex-direction: column; gap: 6px; }
.input-field label { font-size: 0.9rem; font-weight: 500; }
.input-field input,
.input-field select {
  font-family: var(--sans);
  font-size: 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 11px 13px;
  background: var(--paper-raised);
  color: var(--ink);
}

/* Word counter */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  margin: 8px 0 20px;
}
@media (max-width: 640px) {
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
}
.stat-box {
  background: var(--teal-soft);
  border-radius: 8px;
  padding: 14px 8px;
  text-align: center;
}
.stat-num {
  display: block;
  font-family: var(--display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--teal);
  line-height: 1.1;
}
.stat-label {
  font-size: 0.72rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.text-editor {
  width: 100%;
  min-height: 200px;
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.6;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 16px;
  resize: vertical;
  background: var(--paper-raised);
  color: var(--ink);
}

/* IMC calculator */
.imc-result {
  margin-top: 24px;
  text-align: center;
  padding: 24px;
  background: var(--teal-soft);
  border-radius: var(--radius);
}
.imc-value {
  font-family: var(--display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
}
.imc-category {
  font-family: var(--display);
  font-size: 1.2rem;
  margin-top: 6px;
  font-weight: 500;
}
.imc-category.cat-under { color: #C88A2E; }
.imc-category.cat-normal { color: var(--teal); }
.imc-category.cat-over { color: #D6862A; }
.imc-category.cat-obese { color: #D65B4A; }
.imc-scale { margin-top: 20px; }
.imc-scale-bar {
  position: relative;
  display: flex;
  height: 12px;
  border-radius: 999px;
  overflow: hidden;
}
.imc-scale-bar .seg { flex: 1; }
.seg-under { background: #E8C77E; }
.seg-normal { background: #4FA89F; }
.seg-over { background: #E8A04F; }
.seg-obese { background: #D98878; }
.imc-marker {
  position: absolute;
  top: -4px;
  width: 4px;
  height: 20px;
  background: var(--ink);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: left .3s ease;
}
.imc-scale-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 0.72rem;
  color: var(--ink-soft);
}
.disclaimer-note {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 18px;
  padding: 12px 14px;
  background: var(--paper);
  border-left: 3px solid var(--amber);
  border-radius: 4px;
}

/* Birthday generator */
.msg-result {
  margin-top: 22px;
  padding: 22px 24px;
  background: var(--teal-soft);
  border-radius: var(--radius);
  font-size: 1.1rem;
  line-height: 1.5;
  color: var(--ink);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line-strong);
  padding: 28px 0 48px;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
}
.site-footer a { color: var(--ink-soft); margin-right: 16px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* ============================================
   Generador de cumpleaños (tarjeta / animada / video)
   ============================================ */
.bday-h { font-family: var(--display); font-size: 1.15rem; margin: 26px 0 10px; }
.bday-lbl { display:block; font-size:0.9rem; font-weight:600; margin:16px 0 6px; }
.bday-note { font-size:0.82rem; color: var(--ink-soft); margin: 8px 0 0; }
.bday-tabs { display:flex; gap:8px; flex-wrap:wrap; }
.bday-tab {
  font-family: var(--mono); font-size:0.85rem; font-weight:600;
  border:1px solid var(--line-strong); background: var(--paper-raised);
  color: var(--ink-soft); border-radius:999px; padding:9px 16px; cursor:pointer;
}
.bday-tab.sel { background: var(--teal); color:#fff; border-color: var(--teal); }
.bday-grid {
  display:grid; grid-template-columns: repeat(auto-fill, minmax(90px,1fr));
  gap:8px; margin:12px 0 18px;
}
.bday-thumb {
  border:2px solid transparent; background:none; padding:0; cursor:pointer;
  border-radius:10px; overflow:hidden; display:flex; flex-direction:column; align-items:center;
}
.bday-thumb canvas { width:100%; height:auto; border-radius:8px; display:block; border:1px solid var(--line); }
.bday-thumb span { font-size:0.66rem; color: var(--ink-soft); margin-top:3px; text-align:center; line-height:1.2; }
.bday-thumb.sel { border-color: var(--amber); }
.bday-thumb.sel span { color: var(--ink); font-weight:600; }
.bday-preview { margin:8px 0 16px; text-align:center; }
.bday-preview canvas {
  width:100%; max-width:420px; height:auto; border-radius:14px;
  border:1px solid var(--line-strong); box-shadow:0 6px 20px rgba(23,35,43,.10);
}
.bday-video { width:100%; max-width:420px; border-radius:14px; display:block; margin:12px auto 0; }
.bday-split { border-top:1px dashed var(--line-strong); margin:18px 0; }
.bday-phone { display:flex; gap:8px; margin-top:4px; }
.bday-phone select {
  flex:0 0 auto; max-width:58%; font-family:var(--sans); font-size:0.95rem;
  border:1px solid var(--line-strong); border-radius:8px; padding:11px 10px;
  background: var(--paper-raised); color: var(--ink);
}
.bday-phone input {
  flex:1 1 auto; font-family:var(--sans); font-size:1rem;
  border:1px solid var(--line-strong); border-radius:8px; padding:11px 13px;
  background: var(--paper-raised); color: var(--ink);
}
.bday-testnote, .bday-limit {
  font-size:0.82rem; color: var(--ink-soft); background: var(--paper);
  border-left:3px solid var(--amber); border-radius:4px; padding:12px 14px; margin:12px 0;
}
.bday-ok { color: var(--teal); font-weight:600; font-family:var(--mono); font-size:0.82rem; align-self:center; }
.bday-desktop {
  background: var(--teal-soft); border:1px solid var(--line-strong);
  border-radius:8px; padding:14px; margin-top:12px; font-size:0.88rem;
}
.bday-mic-help {
  background:#FBEBD3; border:1px solid var(--amber); border-radius:8px;
  padding:14px 16px; margin-top:12px; font-size:0.88rem; color: var(--amber-ink);
}
.bday-mic-help ol { margin:8px 0 12px 18px; padding:0; }
.bday-mic-help li { margin-bottom:6px; }
.bday-toast {
  position:fixed; left:50%; bottom:24px; transform:translateX(-50%);
  background: var(--ink); color:#fff; padding:11px 18px; border-radius:10px;
  z-index:999; font-size:0.9rem; font-family:var(--sans); box-shadow:0 4px 16px rgba(0,0,0,.25);
}

/* Cumpleaños: opciones agrupadas + pestañas con subtítulo */
.bday-tab { display:inline-flex; flex-direction:column; align-items:center; line-height:1.15; }
.bday-tab small { font-family: var(--sans); font-weight:400; font-size:0.68rem; opacity:0.8; margin-top:2px; }
.bday-opt {
  background: var(--paper); border:1px solid var(--line);
  border-radius:10px; padding:14px 16px; margin:12px 0;
}
.bday-opt-head { font-family: var(--display); font-weight:600; font-size:1rem; margin-bottom:10px; }
.bday-tag {
  font-family: var(--mono); font-size:0.68rem; font-weight:400;
  color: var(--ink-soft); background: var(--paper-raised);
  border:1px solid var(--line); border-radius:999px; padding:2px 8px; margin-left:6px;
}

/* Cumpleaños v9: categorías de diseño, miniaturas de imagen, control de música */
.bday-cats { display:flex; gap:6px; flex-wrap:wrap; margin:6px 0 4px; }
.bday-cat {
  font-family: var(--mono); font-size:0.76rem; font-weight:600;
  border:1px solid var(--line-strong); background: var(--paper-raised);
  color: var(--ink-soft); border-radius:999px; padding:6px 12px; cursor:pointer;
}
.bday-cat.sel { background: var(--amber); color:#fff; border-color: var(--amber); }
.bday-thumb-img { aspect-ratio:1/1; }
.bday-thumb-img img { width:100%; height:100%; object-fit:cover; border-radius:8px; display:block; border:1px solid var(--line); }
.bday-vol { display:flex; align-items:center; gap:10px; flex-wrap:wrap; margin-top:6px; }
.bday-vol label { font-size:0.82rem; font-weight:600; color: var(--ink-soft); }
.bday-vol input[type=range] { flex:1 1 140px; max-width:220px; accent-color: var(--teal); }

/* Cumpleaños v15: foto en línea, librería de música; home: ícono junto al título */
.bday-photo-row { display:flex; align-items:center; gap:12px; flex-wrap:wrap; }
.foto-style { display:inline-flex; align-items:center; gap:6px; }
.foto-style label { font-size:0.85rem; font-weight:600; color: var(--ink-soft); }
.foto-style select { padding:8px 10px; border:1px solid var(--line-strong); border-radius:8px; background: var(--paper-raised); color: var(--ink); }
.music-lib { display:flex; flex-wrap:wrap; gap:8px; margin:8px 0 12px; }
.music-chip {
  font-family: var(--mono); font-size:0.82rem; font-weight:600; cursor:pointer;
  border:1px solid var(--line-strong); background: var(--paper-raised); color: var(--ink-soft);
  border-radius:999px; padding:8px 14px; transition: background .12s ease, color .12s ease;
}
.music-chip:hover { border-color: var(--teal); color: var(--teal); }
.music-chip.sel { background: var(--teal); color:#fff; border-color: var(--teal); }
.tool-card h3 { margin: 0; }