:root{
  --bg:#0b0f17;
  --bg-2:#0f1624;
  --card:#151b28;
  --card-2:#121826;
  --muted:#8fa0bd;
  --text:#eef4ff;
  --accent:#ffd43b;
  --accent-2:#ffcc00;
  --blue:#58a8ff;
  --blue-2:#4da3ff;
  --teal:#37ffd7;
  --border:rgba(255,255,255,.08);
  --border-strong:rgba(255,255,255,.14);
  --shadow:0 14px 34px rgba(0,0,0,.35);
  --radius:20px;
  --radius-sm:14px;
  --gap:14px;
  --app-max-width:1260px;
  --input-bg:rgba(255,255,255,.02);
  font-family:system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  color:var(--text);
  background:
    radial-gradient(1000px 500px at 20% -10%, rgba(255,212,59,.10), transparent 55%),
    radial-gradient(900px 560px at 90% 8%, rgba(88,168,255,.10), transparent 55%),
    linear-gradient(180deg, #06080d 0%, #0a0e16 100%);
}

/* ── Header ── */
.app-header{
  position:sticky; top:0; z-index:20;
  background:rgba(8,11,18,.78);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.brand{
  max-width:var(--app-max-width); margin:0 auto;
  padding:14px 12px;
  display:flex; align-items:center; gap:12px;
}
.brand-icon{width:40px;height:40px;border-radius:12px;box-shadow:var(--shadow);flex:0 0 auto;}
.brand h1{margin:0;font-size:16px;line-height:1.2;}
.brand p{margin:2px 0 0;color:var(--muted);font-size:12px;line-height:1.35;}

/* ── Hero ── */
.hero{max-width:var(--app-max-width);margin:0 auto;padding:10px 12px 0;}
.hero-inner{
  position:relative; overflow:hidden;
  border-radius:24px; border:1px solid rgba(255,255,255,.08);
  background:
    radial-gradient(800px 320px at 10% 20%, rgba(255,212,59,.10), transparent 60%),
    radial-gradient(700px 420px at 90% 0%, rgba(88,168,255,.10), transparent 60%),
    rgba(18,24,38,.94);
  box-shadow:var(--shadow);
  padding:16px 16px 10px;
  display:flex; align-items:center; justify-content:space-between; gap:14px;
}
.hero-copy{min-width:0;}
.hero-copy h2{margin:0;font-size:15px;line-height:1.25;letter-spacing:.2px;}
.hero-copy p{margin:6px 0 0;color:var(--muted);font-size:12px;}
.hero-car{
  width:180px; max-width:42%; height:auto; opacity:.95;
  transform:translateY(6px);
  filter:drop-shadow(0 18px 35px rgba(0,0,0,.5)); flex:0 0 auto;
}

/* ── Layout ── */
.container{
  max-width:var(--app-max-width); margin:0 auto;
  padding:16px 12px;
  display:flex; flex-direction:column; gap:var(--gap);
}
.footer{max-width:var(--app-max-width);margin:0 auto;padding:10px 12px 30px;color:var(--muted);font-size:12px;}
.card{
  background:linear-gradient(180deg, rgba(16,21,33,.96), rgba(11,16,25,.96));
  border:1px solid var(--border); border-radius:24px; box-shadow:var(--shadow); padding:18px;
}
.card h2{margin:0 0 14px;font-size:15px;}
.card h3{margin:0 0 12px;font-size:14px;color:var(--text);}

/* ── Forms ── */
.grid{display:grid;grid-template-columns:repeat(2, minmax(0,1fr));gap:12px;}
label{display:block;min-width:0;}
label span{display:block;margin-bottom:6px;font-size:12px;color:var(--muted);}
input, select{
  width:100%; min-width:0; padding:12px;
  border-radius:14px; border:1px solid var(--border);
  background:var(--input-bg); color:var(--text); outline:none;
  font-size:16px;
  transition:border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
input:focus, select:focus{
  border-color:rgba(255,212,59,.55);
  box-shadow:0 0 0 4px rgba(255,212,59,.10);
}
input::placeholder{color:#8f99aa;}

/* ── Result boxes ── */
.result{
  min-height:84px; border-radius:16px; padding:14px;
  display:flex; flex-direction:column; justify-content:center;
  border:1px solid rgba(255,255,255,.08); background:rgba(255,255,255,.02);
}
.result span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;}
.result strong{margin-top:6px;font-size:18px;line-height:1.15;word-break:break-word;}
.neutral-result{background:rgba(255,255,255,.02);}
.hint{margin:12px 0 0;color:var(--muted);font-size:12px;line-height:1.45;}

/* ── Charger cards ── */
.chargers{display:grid;grid-template-columns:1fr;gap:14px;}
.charger{
  position:relative; overflow:hidden; border-radius:22px; padding:18px;
  background:linear-gradient(180deg, rgba(20,24,36,.96), rgba(12,16,26,.96));
  border:1px solid rgba(255,255,255,.08);
  box-shadow:0 10px 30px rgba(0,0,0,.28);
}
.charger-topline{position:absolute;top:0;left:0;right:0;height:3px;}
.charger-topline-a{background:linear-gradient(90deg, rgba(255,212,0,1), rgba(255,212,0,.35));}
.charger-topline-b{background:linear-gradient(90deg, rgba(85,160,255,1), rgba(85,160,255,.35));}
.charger-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;}
.charger-title{display:flex;align-items:center;gap:10px;min-width:0;}
.charger-title h3{margin:0;font-size:24px;line-height:1;color:var(--text);}
.charger-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;font-weight:800;font-size:16px;flex:0 0 auto;
}
.badge-a{background:var(--accent);color:#111;}
.badge-b{background:var(--blue-2);color:#08111f;}
.charger-type-inline{flex:0 0 auto;}
.type-select{min-width:86px;text-align:center;font-weight:700;}
.charger-inputs{display:grid;grid-template-columns:repeat(2, minmax(0,1fr));gap:12px;}
.charger-inputs label span{text-transform:uppercase;letter-spacing:.08em;font-size:11px;}
.charger-results{display:grid;grid-template-columns:repeat(2, minmax(0,1fr));gap:12px;margin-top:14px;}
.result-time{border-color:rgba(77,163,255,.55);background:linear-gradient(180deg, rgba(77,163,255,.12), rgba(77,163,255,.04));}
.result-time strong{color:var(--blue);}
.result-cost{border-color:rgba(255,212,0,.5);background:linear-gradient(180deg, rgba(255,212,0,.12), rgba(255,212,0,.04));}
.result-cost strong{color:var(--accent);}
.limit-note{margin:12px 0 0;font-size:12px;line-height:1.4;color:var(--muted);}

/* Winner highlight */
.charger.is-winner-cost{box-shadow:0 0 0 1px rgba(255,212,0,.30), 0 18px 40px rgba(255,212,0,.07);}
.charger.is-winner-time{box-shadow:0 0 0 1px rgba(77,163,255,.30), 0 18px 40px rgba(77,163,255,.07);}
.charger.is-winner-cost .result-cost{box-shadow:0 0 0 1px rgba(255,212,0,.35) inset;}
.charger.is-winner-time .result-time{box-shadow:0 0 0 1px rgba(77,163,255,.35) inset;}

/* ── Comparativa ── */
.comparison-box{
  margin-top:16px; padding:16px; border-radius:20px;
  border:1px solid rgba(255,255,255,.08);
  background:linear-gradient(90deg, rgba(10,14,24,.8), rgba(14,20,34,.8));
}
.comparison-box h3{margin:0 0 14px;text-transform:uppercase;letter-spacing:.12em;font-size:12px;color:var(--muted);}
.summary{display:grid;grid-template-columns:1fr;gap:12px;}
.pill{
  border-radius:18px; border:1px solid rgba(255,255,255,.10);
  padding:14px 16px;
  display:flex; flex-direction:column; align-items:flex-start; justify-content:center;
  gap:8px; min-height:72px; background:rgba(255,255,255,.03);
}
.pill span{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.1em;}
.pill strong{color:var(--text);font-size:18px;line-height:1.2;}
.pill-highlight{border-color:rgba(55,255,215,.5);background:linear-gradient(180deg, rgba(55,255,215,.08), rgba(55,255,215,.03));}
.pill-highlight strong{color:var(--teal);}
.comparison-footer{
  margin-top:16px; padding-top:16px; border-top:1px solid rgba(255,255,255,.08);
  display:flex; align-items:center; justify-content:space-between; gap:14px; flex-wrap:wrap;
}
.choice-note{margin:0;font-size:13px;color:var(--muted);}
.choice-note strong{color:var(--text);}
.choice-group{display:flex;gap:10px;flex-wrap:wrap;}
.choice-btn{
  min-width:94px; border-radius:14px; padding:12px 16px;
  border:1px solid rgba(255,255,255,.10); background:rgba(255,255,255,.04);
  color:var(--text); font-weight:700; font-size:14px; cursor:pointer;
  transition:all .18s ease;
}
.choice-btn:hover{transform:translateY(-1px);}
#chooseA.active{background:var(--accent);color:#111;border-color:transparent;box-shadow:0 8px 24px rgba(255,212,0,.25);}
#chooseB.active{background:var(--blue-2);color:#08111f;border-color:transparent;box-shadow:0 8px 24px rgba(77,163,255,.25);}

/* ── Brand selector ── */
.brand-selector-row{
  margin-top:12px;
  padding:14px 16px;
  border-radius:20px;
  border:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.02);
  display:flex;
  align-items:center;
  gap:12px;
}
.brand-selector-label span{
  font-size:12px;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.08em;
  white-space:nowrap;
  flex:0 0 auto;
}
.brand-selector-inner{
  display:flex;
  align-items:center;
  gap:8px;
  flex:1 1 0;
  min-width:0;
}
.brand-select{
  flex:1 1 0;
  min-width:0;
  font-size:14px;
  padding:10px 12px;
}
.brand-preview{
  display:flex;
  align-items:center;
  flex:0 0 auto;
}
.brand-logo-preview{
  width:32px;
  height:32px;
  object-fit:contain;
  border-radius:8px;
  background:rgba(255,255,255,.08);
  padding:4px;
  display:block;
}
.brand-logo-fallback{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:32px;
  height:32px;
  border-radius:8px;
  background:rgba(255,212,0,.15);
  font-size:16px;
}

/* ── Toast ── */
#toast{
  position:fixed; bottom:28px; left:50%; transform:translateX(-50%) translateY(20px);
  background:rgba(30,220,120,.18); border:1px solid rgba(30,220,120,.35);
  backdrop-filter:blur(10px);
  color:#5fffa8; font-size:14px; font-weight:600;
  padding:12px 22px; border-radius:50px;
  pointer-events:none; opacity:0;
  transition:opacity .25s ease, transform .25s ease;
  z-index:999; white-space:nowrap;
}
#toast.toast-visible{opacity:1;transform:translateX(-50%) translateY(0);}
#toast.toast-error{
  background:rgba(220,60,60,.18);
  border-color:rgba(220,60,60,.35);
  color:#ff8080;
}

/* ── Histórico ── */
.history-actions{display:flex;gap:10px;margin-bottom:12px;flex-wrap:wrap;}

button{
  appearance:none; border:none; border-radius:14px;
  padding:12px 14px; background:var(--accent); color:#111;
  font-weight:700; font-size:14px; line-height:1.2; cursor:pointer;
  box-shadow:var(--shadow);
  transition:transform .12s ease, filter .18s ease, opacity .18s ease;
}
button:hover{filter:brightness(.98);transform:translateY(-1px);}
button:active{transform:translateY(0);}
button:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(255,212,0,.18), var(--shadow);}

/* Delete button */
.btn-delete{
  background:rgba(255,80,80,.12);
  color:#ff6b6b;
  border:1px solid rgba(255,80,80,.25);
  padding:6px 10px;
  border-radius:10px;
  font-size:11px;
  font-weight:700;
  box-shadow:none;
  min-width:unset;
}
.btn-delete:hover{background:rgba(255,80,80,.22);filter:none;transform:none;}

.history-wrap{overflow-x:auto;border-radius:14px;border:1px solid rgba(255,255,255,.06);}
.history-table{
  width:100%; border-collapse:collapse; font-size:12px;
  min-width:860px; background:rgba(255,255,255,.01);
}
.history-table thead{background:rgba(255,255,255,.03);}
.history-table th,.history-table td{
  padding:10px 8px; text-align:left;
  border-bottom:1px solid rgba(255,255,255,.08); white-space:nowrap;
}
.history-table th{color:var(--muted);font-weight:600;font-size:12px;}
.history-table tbody tr:hover{background:rgba(255,255,255,.025);}

/* Brand cell in history */
.history-table td{
  vertical-align:middle;
}
.td-brand{
  /* td normal, sin flex */
}
.td-brand-inner{
  display:flex;
  align-items:center;
  gap:8px;
  white-space:nowrap;
}
.td-brand span{
  line-height:1.3;
}
.history-brand-wrap{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:24px;
  height:24px;
  flex:0 0 24px;
}
.history-brand-logo{
  display:block;
  width:24px;
  height:24px;
  object-fit:contain;
  border-radius:5px;
  background:rgba(255,255,255,.08);
  padding:2px;
}
.history-brand-fallback{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:24px;
  height:24px;
  flex:0 0 24px;
  border-radius:5px;
  background:rgba(255,212,0,.12);
  font-size:11px;
}

/* AC/DC badge */
.badge-tipo{
  display:inline-block; padding:3px 8px; border-radius:7px;
  font-size:11px; font-weight:700; letter-spacing:.06em;
}
.badge-tipo.ac{background:rgba(255,212,0,.18);color:var(--accent);border:1px solid rgba(255,212,0,.30);}
.badge-tipo.dc{background:rgba(77,163,255,.18);color:var(--blue);border:1px solid rgba(77,163,255,.30);}

/* ── Responsive ── */
@media (min-width: 820px){
  .brand{padding:14px 20px;}
  .hero{padding:12px 20px 0;}
  .hero-inner{padding:18px 20px 10px;}
  .hero-copy h2{font-size:16px;}
  .hero-car{width:320px;max-width:52%;}
  .container{padding:18px 20px;gap:16px;}
  .footer{padding:10px 20px 34px;}
  .brand h1{font-size:18px;}
  .battery-grid{grid-template-columns:repeat(4, minmax(0,1fr));}
  .chargers{grid-template-columns:1fr 1fr;}
  .summary{grid-template-columns:1fr 1fr 1fr;}
  .comparison-footer{flex-wrap:nowrap;}
}
@media (min-width: 1100px){
  .hero-car{width:360px;max-width:48%;}
  .card{padding:20px;}
}
@media (max-width: 640px){
  .charger{padding:16px;}
  .charger-title h3{font-size:20px;}
  .charger-badge{width:30px;height:30px;font-size:14px;}
  .type-select{min-width:76px;}
  .comparison-footer{align-items:flex-start;}
  .choice-group{width:100%;}
  .choice-btn{flex:1 1 0;}
  .brand-selector-row{flex-wrap:wrap; gap:8px;}
  .brand-selector-label span{width:100%;}
  .brand-selector-inner{width:100%;}
}