:root{
  --accent:#d32f2f;
  --accent-2:#ff6b6b;
  --ink:#241f1f;
  --muted:#746767;
  --bg:#fff7f7;
  --bg-2:#ffffff;
  --card:rgba(255,255,255,.88);
  --line:rgba(211,47,47,.16);
  --soft:#fff0f0;
  --shadow:0 18px 50px rgba(80,31,31,.12);
  --shadow-hover:0 22px 55px rgba(211,47,47,.22);
  --radius:24px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  min-height:100vh;
  margin:0;
  padding:22px;
  color:var(--ink);
  font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  background:
    radial-gradient(circle at 8% 18%,rgba(211,47,47,.12),transparent 30%),
    radial-gradient(circle at 92% 78%,rgba(255,107,107,.18),transparent 30%),
    linear-gradient(135deg,var(--bg),var(--bg-2));
  overflow-x:hidden;
}

body.dark{
  --ink:#fff7f7;
  --muted:#d6c4c4;
  --bg:#160b0b;
  --bg-2:#241111;
  --card:rgba(39,18,18,.86);
  --line:rgba(255,255,255,.13);
  --soft:rgba(255,255,255,.07);
  --shadow:0 18px 50px rgba(0,0,0,.28);
}

button,input,select{font:inherit}
button:disabled{opacity:.48;cursor:not-allowed;transform:none!important;box-shadow:none!important}

.page-glow{
  position:fixed;
  width:300px;
  height:300px;
  border-radius:999px;
  filter:blur(14px);
  opacity:.28;
  pointer-events:none;
  z-index:-1;
}
.glow-one{left:-130px;top:120px;background:#ff7373}
.glow-two{right:-120px;bottom:30px;background:#ffc4c4}

.topbar,.layout,.footer{width:min(1180px,100%);margin-inline:auto}
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:8px 0 20px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
  color:inherit;
  text-decoration:none;
}
.brand-icon{
  width:54px;
  height:54px;
  flex:0 0 auto;
  border-radius:18px;
  padding:8px;
  background:rgba(255,255,255,.76);
  box-shadow:var(--shadow);
}
body.dark .brand-icon{background:rgba(255,255,255,.11)}
.brand strong{display:block;font-size:1.08rem;letter-spacing:-.025em}
.brand small{
  display:block;
  max-width:56vw;
  color:var(--muted);
  font-weight:750;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.top-actions{display:flex;gap:10px;flex:0 0 auto}
.round-btn{
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:16px;
  color:var(--ink);
  background:var(--card);
  box-shadow:var(--shadow);
  cursor:pointer;
  font-weight:900;
  transition:transform .16s ease,border-color .16s ease;
}
.round-btn:hover{transform:translateY(-2px);border-color:rgba(211,47,47,.35)}

.layout{display:grid;gap:18px}
.hero,.workspace,.tips,.footer{animation:rise .42s ease both}
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

.hero{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:24px;
  align-items:center;
  padding:30px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(135deg,var(--card),rgba(255,255,255,.62));
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
}
body.dark .hero{background:linear-gradient(135deg,var(--card),rgba(255,255,255,.05))}
.eyebrow{
  display:inline-flex;
  max-width:100%;
  padding:8px 12px;
  border-radius:999px;
  color:var(--accent);
  background:var(--soft);
  font-weight:900;
  font-size:.86rem;
}
.hero h1{
  margin:13px 0 10px;
  max-width:760px;
  font-size:clamp(2rem,5vw,4.15rem);
  line-height:.98;
  letter-spacing:-.065em;
}
.hero p{margin:0;max-width:650px;color:var(--muted);font-size:1.04rem;line-height:1.56}
.quick-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;min-width:330px}
.quick-stats div{
  min-width:0;
  padding:16px 13px;
  border:1px solid var(--line);
  border-radius:20px;
  background:var(--soft);
  text-align:center;
}
.quick-stats strong{display:block;color:var(--accent);font-size:1.38rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.quick-stats span{display:block;color:var(--muted);font-weight:850;font-size:.78rem;margin-top:2px}

.workspace{display:grid;grid-template-columns:315px minmax(0,1fr);gap:18px;align-items:start}
.settings-panel,.maker-panel,.tips{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--card);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
}
.settings-panel{position:sticky;top:18px;padding:22px}
.panel-title h2{margin:0;font-size:1.1rem}
.panel-title p{margin:5px 0 16px;color:var(--muted);font-size:.92rem;line-height:1.35}
.field{display:grid;gap:8px;margin-bottom:14px}
.field span{color:var(--muted);font-weight:900;font-size:.85rem}
select,input[type=text]{
  width:100%;
  min-height:46px;
  padding:0 13px;
  border:1px solid var(--line);
  border-radius:15px;
  color:var(--ink);
  background:rgba(255,255,255,.78);
  outline:none;
  font-weight:800;
  transition:border-color .15s ease,box-shadow .15s ease,background .15s ease;
}
body.dark select,body.dark input[type=text]{background:rgba(255,255,255,.08)}
select:focus,input[type=text]:focus{border-color:rgba(211,47,47,.62);box-shadow:0 0 0 4px rgba(211,47,47,.12)}
.estimate-box,.note-box{
  margin:16px 0;
  padding:15px;
  border-radius:18px;
  background:var(--soft);
  border:1px solid var(--line);
}
.estimate-box span{display:block;color:var(--muted);font-size:.78rem;font-weight:900}
.estimate-box strong{display:block;color:var(--accent);font-size:1.35rem;margin-top:2px}
.estimate-box small{display:block;color:var(--muted);font-size:.74rem;line-height:1.35;margin-top:3px}
.note-box{margin-bottom:0}
.note-box strong{color:var(--accent)}
.note-box p{margin:6px 0 0;color:var(--muted);font-size:.9rem;line-height:1.45}

.maker-panel{padding:18px;min-width:0}
.toolbar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:14px}
.btn{
  min-height:46px;
  border:0;
  border-radius:16px;
  padding:0 18px;
  color:#fff;
  background:var(--accent);
  font-weight:950;
  cursor:pointer;
  box-shadow:0 13px 26px rgba(211,47,47,.22);
  transition:transform .16s ease,box-shadow .16s ease,opacity .16s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.btn:active{transform:translateY(0) scale(.985)}
.btn.soft{background:#fff;color:var(--accent);border:1px solid var(--line);box-shadow:var(--shadow)}
.btn.quiet{background:transparent;color:var(--muted);border:1px solid var(--line);box-shadow:none}
.btn.danger{background:linear-gradient(135deg,var(--accent),var(--accent-2))}
body.dark .btn.soft{background:rgba(255,255,255,.09)}
input[type=file]{display:none}

.drop-zone{
  position:relative;
  display:grid;
  place-items:center;
  min-height:430px;
  border:2px dashed rgba(211,47,47,.3);
  border-radius:24px;
  background:linear-gradient(135deg,rgba(255,255,255,.76),rgba(255,238,238,.76));
  overflow:hidden;
  cursor:pointer;
  transition:border-color .16s ease,box-shadow .16s ease,transform .16s ease,background .16s ease;
}
body.dark .drop-zone{background:rgba(255,255,255,.055)}
.drop-zone.dragover{border-color:var(--accent);box-shadow:inset 0 0 0 999px rgba(211,47,47,.055);transform:scale(1.004)}
.drop-zone.has-images{display:block;padding:16px;cursor:default}
.drop-empty{max-width:430px;text-align:center;padding:26px}
.drop-zone.has-images .drop-empty{display:none}
.drop-empty img{width:98px;height:98px;opacity:.68}
.drop-empty h2{margin:10px 0 6px;font-size:1.55rem;letter-spacing:-.03em}
.drop-empty p{margin:0;color:var(--muted);line-height:1.45}
.drop-empty small{display:block;margin-top:9px;color:var(--muted)}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(158px,1fr));gap:14px;align-items:start}
.thumb{
  position:relative;
  min-width:0;
  border:1px solid var(--line);
  border-radius:20px;
  overflow:hidden;
  background:rgba(255,255,255,.82);
  box-shadow:0 12px 26px rgba(65,29,29,.1);
  animation:pop .22s ease both;
}
body.dark .thumb{background:rgba(255,255,255,.08)}
@keyframes pop{from{opacity:0;transform:scale(.97)}to{opacity:1;transform:none}}
.thumb.dragging{opacity:.52;transform:scale(.96)}
.thumb.ordering{outline:2px dashed rgba(211,47,47,.42);outline-offset:3px;cursor:grab}
.thumb-media{height:132px;background:#fafafa;display:grid;place-items:center;overflow:hidden}
body.dark .thumb-media{background:rgba(255,255,255,.055)}
.thumb-media img{display:block;max-width:100%;max-height:100%;object-fit:contain;transition:transform .18s ease}
.badge{
  position:absolute;
  left:10px;
  top:10px;
  width:30px;
  height:30px;
  display:grid;
  place-items:center;
  border-radius:999px;
  background:#fff;
  color:var(--accent);
  font-weight:1000;
  box-shadow:0 8px 20px rgba(0,0,0,.13);
  z-index:1;
}
.thumb-info{padding:10px 10px 8px}
.filename{display:block;color:var(--ink);font-size:.76rem;font-weight:850;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.meta{margin-top:3px;color:var(--muted);font-size:.7rem;font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.thumb-actions{display:flex;gap:7px;padding:0 10px 10px}
.mini-btn{flex:1;min-height:34px;border:1px solid var(--line);border-radius:12px;background:var(--soft);color:var(--ink);font-weight:900;cursor:pointer;transition:transform .15s ease,background .15s ease}
.mini-btn:hover{transform:translateY(-1px)}
.mini-btn.remove{background:#2b2b2b;color:#fff;border-color:#2b2b2b}

.tips{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:18px}
.tips article{padding:15px;border-radius:18px;background:var(--soft)}
.tips strong{color:var(--accent)}
.tips p{margin:6px 0 0;color:var(--muted);line-height:1.4;font-size:.92rem}
.footer{display:flex;justify-content:space-between;gap:12px;color:var(--muted);padding:20px 4px 8px;font-size:.86rem;font-weight:800}

.overlay{position:fixed;inset:0;z-index:30;display:grid;place-items:center;padding:20px;background:rgba(20,8,8,.38);backdrop-filter:blur(9px);opacity:0;visibility:hidden;transition:.18s ease}
.overlay.show{opacity:1;visibility:visible}
.modal-card{width:min(360px,100%);padding:24px;border-radius:24px;background:var(--card);color:var(--ink);text-align:center;box-shadow:var(--shadow-hover);border:1px solid var(--line)}
.loader{width:46px;height:46px;margin:0 auto 12px;border-radius:999px;border:4px solid rgba(211,47,47,.18);border-top-color:var(--accent);animation:spin .75s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.progress{height:11px;background:var(--soft);border-radius:999px;overflow:hidden;margin-top:13px;border:1px solid var(--line)}
.progress>b{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .18s ease}

@media (max-width:920px){
  body{padding:16px}
  .hero{grid-template-columns:1fr;padding:24px}
  .quick-stats{min-width:0;width:100%}
  .workspace{grid-template-columns:1fr}
  .settings-panel{position:static}
}
@media (max-width:620px){
  body{padding:12px}
  .topbar{align-items:flex-start}
  .brand-icon{width:48px;height:48px;border-radius:16px}
  .brand small{max-width:58vw;font-size:.78rem}
  .hero{padding:20px;border-radius:21px}
  .hero h1{font-size:2.15rem;letter-spacing:-.055em}
  .quick-stats{grid-template-columns:1fr 1fr}
  .quick-stats div:last-child{grid-column:1/-1}
  .settings-panel,.maker-panel,.tips{border-radius:21px}
  .toolbar{display:grid;grid-template-columns:1fr 1fr}
  .toolbar .primary,.toolbar .danger{grid-column:1/-1;text-align:center;display:grid;place-items:center}
  .drop-zone{min-height:340px;border-radius:20px}
  .drop-zone.has-images{padding:12px}
  .thumbs{grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:10px}
  .thumb-media{height:112px}
  .tips{grid-template-columns:1fr}
  .footer{flex-direction:column;text-align:center}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* v3.2 — Ajuste visual de botones */
.toolbar{
  align-items:center;
}
.btn,
label.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  line-height:1;
  white-space:nowrap;
  text-align:center;
  vertical-align:middle;
  -webkit-user-select:none;
  user-select:none;
}
label.btn{
  appearance:none;
  -webkit-appearance:none;
}
.btn.primary{
  flex:1 1 220px;
  max-width:280px;
  padding-inline:22px;
  border-radius:18px;
  background:linear-gradient(135deg,var(--accent),#c92323);
}
.btn.soft,
.btn.quiet,
.btn.danger{
  flex:0 1 auto;
}
.maker-panel{
  overflow:hidden;
}
@media (min-width:621px){
  .toolbar .btn{
    min-width:118px;
  }
  .toolbar .primary{
    min-width:230px;
  }
}
@media (max-width:620px){
  .toolbar{
    grid-template-columns:1fr 1fr;
    gap:10px;
  }
  .toolbar .btn,
  .toolbar .primary{
    width:100%;
    max-width:none;
    min-width:0;
    min-height:48px;
    padding-inline:14px;
    font-size:.96rem;
  }
  .toolbar .primary,
  .toolbar .danger{
    grid-column:1/-1;
  }
}

/* v3.3 — Compatibilidad móvil y navegadores */
html{width:100%;min-width:0;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{width:100%;max-width:100%;padding:max(12px,env(safe-area-inset-top)) max(12px,env(safe-area-inset-right)) max(14px,env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left));overscroll-behavior-y:contain}
img,svg,video,canvas{max-width:100%;height:auto}
select,input[type=text],button,.btn{font-size:16px}
.topbar{position:relative;z-index:2}
.brand{flex:1 1 auto}.brand span,.hero-copy,.hero,.workspace,.settings-panel,.maker-panel,.tips,.footer{min-width:0}
.hero{overflow:hidden}.hero h1{overflow-wrap:anywhere}.quick-stats{max-width:100%}.quick-stats strong,.quick-stats span{min-width:0}
.toolbar{width:100%}.btn,label.btn{min-width:0;touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.drop-zone{width:100%;max-width:100%;touch-action:manipulation}.drop-empty{width:100%}.drop-empty img{display:block;margin-inline:auto}
.thumb{max-width:100%}.thumb-actions{flex-wrap:wrap}.mini-btn{min-width:68px;touch-action:manipulation}
.overlay{padding:max(18px,env(safe-area-inset-top)) max(14px,env(safe-area-inset-right)) max(18px,env(safe-area-inset-bottom)) max(14px,env(safe-area-inset-left))}
.modal-card{max-width:calc(100vw - 28px)}
@supports not ((backdrop-filter:blur(10px)) or (-webkit-backdrop-filter:blur(10px))){
  .hero,.settings-panel,.maker-panel,.tips,.modal-card{background:var(--bg-2)}
  body.dark .hero,body.dark .settings-panel,body.dark .maker-panel,body.dark .tips,body.dark .modal-card{background:#241111}
}
.hero,.settings-panel,.maker-panel,.tips,.overlay{-webkit-backdrop-filter:blur(18px)}
@media (max-width:760px){
  .topbar{gap:10px}.top-actions{gap:8px}.round-btn{width:42px;height:42px;border-radius:15px;flex:0 0 auto}
  .hero{gap:18px}.quick-stats{grid-template-columns:repeat(3,minmax(0,1fr))}.quick-stats div{padding:13px 8px}
}
@media (max-width:480px){
  body{padding:10px}.topbar{padding-bottom:14px}.brand-icon{width:44px;height:44px;padding:7px}.brand strong{font-size:.98rem}.brand small{max-width:46vw;font-size:.72rem}.round-btn{width:40px;height:40px}
  .hero{padding:18px}.eyebrow{font-size:.78rem;line-height:1.25;white-space:normal}.hero h1{font-size:clamp(1.85rem,12vw,2.55rem);line-height:1.02}.hero p{font-size:.96rem}
  .quick-stats{grid-template-columns:1fr}.quick-stats div:last-child{grid-column:auto}.settings-panel,.maker-panel{padding:16px}
  .toolbar{display:grid;grid-template-columns:1fr}.toolbar .btn,.toolbar .primary,.toolbar .danger{grid-column:auto;width:100%;max-width:none}
  .drop-zone{min-height:300px}.drop-empty{padding:20px 12px}.drop-empty img{width:78px;height:78px}.drop-empty h2{font-size:1.25rem}
  .thumbs{grid-template-columns:1fr}.thumb-media{height:180px}
}
@media (max-width:350px){.brand small{display:none}.hero h1{font-size:1.75rem}.settings-panel,.maker-panel{padding:14px}}