/* Estilo inspirado en byd.com: Montserrat, blanco y gris claro, negro #252728
   para los objetos sólidos, rojo #d70c19 como acento y esquinas rectas. */

:root {
  --bg: #f1f5f9;
  --panel: #ffffff;
  --panel-2: #fafbfc;
  --border: #e2e8f0;
  --text: #1f2937;
  --muted: #64748b;
  --accent: #3fb984;
  --accent-2: #7aa6e6;
  --accent-3: #ffe5a3;
  --warn: #7aa6e6;
  --danger: #ef5c5c;
  --bar: #94a3b8;
  --bar-sel: #3fb984;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.03), 0 10px 40px -20px rgba(15, 23, 42, 0.25);
}

* { box-sizing: border-box; }

html { overflow-x: hidden; }

body {
  margin: 0;
  overflow-x: hidden;
  background: radial-gradient(1200px 600px at 50% 0%, #f8fafc 0%, var(--bg) 70%);
  color: var(--text);
  font: 400 16px/1.55 "Montserrat", Arial, "Helvetica Neue", Helvetica, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px 64px; }

/* ---- Cabecera pastel suave ---- */
header {
  background: linear-gradient(135deg, #f8fffb 0%, #f5f8ff 60%, #fffdf2 100%);
  border-bottom: 1px solid var(--border);
  width: 100vw;
  margin: 0 0 28px calc(-50vw + 50%);
  padding: 64px calc(50vw - 50%) 56px;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 60%, var(--accent-3) 100%);
}
h1 {
  margin: 0 0 14px;
  max-width: 19ch;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -.03em;
}
h1 span {
  display: inline-block;
  white-space: nowrap;
  background: linear-gradient(90deg, #d7f7ec 0%, #e7f0ff 55%, #fff2cc 100%);
  color: var(--text);
  padding: .04em .24em;
  margin-left: -.18em;
  border-radius: 999px;
}
@media (max-width: 380px) {
  h1 span { white-space: normal; }
}
.sub { margin: 0; max-width: 62ch; color: var(--muted); font-size: .98rem; line-height: 1.65; }

/* ---- Insignias y avisos ---- */
.badges { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 6px 10px;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  border-radius: 999px;
}
.badge.live { border-color: rgba(63, 185, 132, .4); color: #2f9f70; }
.badge.demo { border-color: rgba(122, 166, 230, .45); color: #5f86c7; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }

.notice {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-2);
  color: var(--text);
  padding: 10px 16px;
  font-size: .88rem;
  margin-bottom: 12px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.notice.info { border-left-color: var(--accent-2); }
.notice.err { border-left-color: var(--danger); }

/* ---- Tarjetas ---- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 30px 30px;
  margin-bottom: 22px;
}
h2 {
  position: relative;
  margin: 0 0 18px;
  padding-top: 12px;
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}
h2::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 28px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 100%);
}

/* ---- Formulario ---- */
.grid { display: grid; gap: 16px; }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .07em;
  text-transform: uppercase;
}

input:not([type="checkbox"]),
select {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: 11px 12px;
  font: inherit;
  font-variant-numeric: tabular-nums;
  transition: border-color .25s ease-out, box-shadow .25s ease-out;
}
input:not([type="checkbox"]):hover,
select:hover { border-color: #a8a9a9; }
input:focus, select:focus {
  outline: none;
  box-shadow: 0 0 0 4px rgba(122, 166, 230, .18);
  border-color: #9fb7e9;
}
input[type="checkbox"] { accent-color: var(--accent); width: 16px; height: 16px; }

.check { display: flex; align-items: center; gap: 9px; margin-bottom: 10px; }
.check label { margin: 0; color: var(--text); font-size: .88rem; font-weight: 500; letter-spacing: 0; text-transform: none; }

.row { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; margin-top: 4px; }
.row > .grow { flex: 1 1 220px; }

/* ---- Botón: negro sólido, esquinas rectas y flecha, como el .btn de BYD ---- */
button {
  background: linear-gradient(135deg, #3fb984 0%, #7aa6e6 120%);
  color: #fff;
  border: 0;
  border-radius: 999px;
  padding: 13px 30px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  white-space: nowrap;
  box-shadow: 0 10px 40px -18px #3fb984;
  transition: transform .25s ease-out, box-shadow .25s ease-out, filter .25s ease-out;
}
button::after {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-left: 10px;
  border-top: 2px solid;
  border-right: 2px solid;
  transform: rotate(45deg) translateY(-1px);
  transition: transform .25s ease-out;
}
button:hover:not(:disabled) {
  filter: brightness(1.03);
  box-shadow: 0 10px 50px -16px #3fb984;
  transform: translateY(-1px);
}
button:hover:not(:disabled)::after { transform: translateX(4px) rotate(45deg) translateY(-1px); }
button:disabled { opacity: .6; cursor: progress; }

/* ---- Ajustes avanzados ---- */
.more {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.more > summary {
  display: flex;
  align-items: center;
  gap: 9px;
  cursor: pointer;
  list-style: none;
  color: var(--text);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.more > summary::-webkit-details-marker { display: none; }
.more > summary::before {
  content: "";
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg) translateY(-2px);
  transition: transform .25s ease-out;
}
.more[open] > summary::before { transform: rotate(-135deg) translateY(-2px); }
.more[open] > summary { margin-bottom: 16px; }
.more .hint { margin: 14px 0 0; }
.more .check { margin-bottom: 0; align-self: end; padding-bottom: 11px; }

/* ---- Gráfico ---- */
.chart { position: relative; margin-top: 6px; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.grid-line { stroke: var(--border); stroke-width: 1; }
.zero-line { stroke: var(--warn); stroke-width: 1.5; stroke-dasharray: 4 4; }
.day-sep { stroke: #a8a9a9; stroke-width: 1.5; }
.bar { fill: var(--bar); }
.bar.sel { fill: var(--bar-sel); }
.bar.neg { fill: var(--warn); }
.bar.neg.sel { fill: var(--accent); }
.bar.past { opacity: .28; }
.tick { fill: var(--muted); font-size: 10px; }
.day-tag { fill: var(--text); font-size: 11px; font-weight: 600; }
.legend { display: flex; gap: 18px; flex-wrap: wrap; color: var(--muted); font-size: .78rem; margin-top: 12px; }
.legend i { display: inline-block; width: 12px; height: 12px; margin-right: 6px; vertical-align: -1px; }

/* ---- Resultado ---- */
.verdict { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; }
.window {
  color: var(--accent);
  font-size: clamp(1.5rem, 3vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.2;
}
.window small { display: block; margin-top: 4px; color: var(--muted); font-size: .82rem; font-weight: 500; letter-spacing: 0; }
.price-big { margin-left: auto; font-size: clamp(1.5rem, 2.7vw, 2rem); font-weight: 700; letter-spacing: -.03em; }
.price-big small { display: block; text-align: right; color: var(--muted); font-size: .74rem; font-weight: 500; letter-spacing: .05em; text-transform: uppercase; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-top: 20px; }
.stat { background: linear-gradient(180deg, #fafbfc 0%, #ffffff 100%); border: 1px solid var(--border); padding: 14px 16px; border-radius: 12px; box-shadow: var(--shadow); }
.stat .k { color: var(--muted); font-size: .7rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; }
.stat .v { margin-top: 6px; font-size: 1.12rem; font-weight: 700; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.stat .v.good { color: #2f9f70; }
.stat .v.neg { color: var(--danger); }

table { width: 100%; border-collapse: collapse; font-size: .86rem; margin-top: 12px; }
th, td { padding: 9px 8px; text-align: left; border-bottom: 1px solid var(--border); }
th {
  color: var(--muted);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .07em;
  text-transform: uppercase;
  border-bottom-color: var(--text);
}
tbody tr:hover { background: var(--bg); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

.hours { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }
.chip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 14px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  border: 1px solid rgba(122, 166, 230, .25);
  color: var(--text);
  padding: 8px 14px;
  font-size: .88rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  border-radius: 999px;
  box-shadow: var(--shadow);
}
.chip-when { font-weight: 600; }
.chip-kwh { color: var(--muted); }
.chip-price { color: var(--muted); }
.chip-cost { font-weight: 700; color: var(--text); }

.hint { color: var(--muted); font-size: .8rem; margin-top: 8px; }
.hidden { display: none !important; }

@media (max-width: 900px) {
  .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  header { padding-top: 46px; padding-bottom: 42px; }
  .grid.cols-3, .grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
  .card { padding: 22px 18px 24px; }
  .price-big { margin-left: 0; }
}
@media (max-width: 520px) {
  .grid.cols-4, .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; }
  .more .check { align-self: start; padding-bottom: 0; }
  .stats { gap: 8px; }
  .stat { padding: 10px; }
  .stat .v { font-size: .95rem; }
}

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