/* ============================================================
   ERPCalc — Calculadora "Costo sin ERP"
   Archivo: css/style.css
   Convención: BEM (Block__Element--Modifier)
   ============================================================ */

/* ── Variables de marca ──────────────────────────────────── */
:root {
  /* Fondos */
  --bg:       #0c0e11;
  --s1:       #13161b;
  --s2:       #1a1e25;
  --s3:       #21262f;

  /* Bordes */
  --border:   rgba(255, 255, 255, 0.07);
  --border2:  rgba(255, 255, 255, 0.13);

  /* Colores semánticos — reemplaza con los de tu marca */
  --accent:   #e8602a;
  --accent-d: #bf4d1f;
  --green:    #1cb87a;
  --amber:    #d4853a;
  --red:      #e04848;

  /* Tipografía */
  --text:   #edeae2;
  --muted:  #6e6c66;
  --dim:    #363430;
  --serif:  'DM Serif Display', Georgia, serif;
  --sans:   'DM Sans', system-ui, sans-serif;

  /* Espaciado */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* Transiciones */
  --transition: 0.3s ease;
  --transition-bar: 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ───────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Shell (contenedor principal) ───────────────────────── */
.shell {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 28px 100px;
}

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  padding: 72px 0 56px;
  position: relative;
  animation: fadeUp 0.6s ease both;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border2), transparent);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(232, 96, 42, 0.28);
  border-radius: 20px;
  padding: 5px 14px;
  margin-bottom: 28px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

h1 {
  font-family: var(--serif);
  font-size: clamp(34px, 5.5vw, 56px);
  font-weight: 400;
  line-height: 1.08;
  max-width: 660px;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-sub {
  font-size: 15px;
  color: var(--muted);
  max-width: 500px;
  line-height: 1.75;
}

.hero-note {
  margin-top: 10px;
  font-size: 12px;
  color: var(--dim);
}

/* ── Sections ────────────────────────────────────────────── */
.section {
  margin-top: 52px;
  animation: fadeUp 0.5s ease both;
  animation-delay: 0.08s;
}

.sec-label {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sec-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Grid ────────────────────────────────────────────────── */
.g2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.g4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

/* ── Panel ───────────────────────────────────────────────── */
.panel {
  background: var(--s1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.panel--center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.ptitle {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 20px;
}

/* ── Slider groups ───────────────────────────────────────── */
.sg {
  margin-bottom: 16px;
}

.sg:last-child {
  margin-bottom: 0;
}

.sl {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 7px;
}

.sl-txt {
  font-size: 12px;
  color: var(--muted);
}

.sl-val {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  min-width: 80px;
  text-align: right;
}

/* ── Range input ─────────────────────────────────────────── */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 3px;
  background: var(--s3);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
  cursor: pointer;
  transition: transform 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.25);
}

input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
  cursor: pointer;
}

/* ── KPI cards ───────────────────────────────────────────── */
.kpi {
  background: var(--s2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px 16px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition);
}

.kpi--danger { border-color: rgba(224, 72, 72, 0.3); }
.kpi--warning { border-color: rgba(212, 133, 58, 0.3); }

.kpi__lbl {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.kpi__val {
  font-family: var(--serif);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 400;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  transition: color var(--transition);
}

.kpi__val--red   { color: var(--red); }
.kpi__val--amber { color: var(--amber); }
.kpi__val--green { color: var(--green); }

.kpi__sub {
  font-size: 10px;
  color: var(--dim);
  margin-top: 5px;
}

.kpi__bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  opacity: 0.6;
}

.kpi__bar--red   { background: var(--red); }
.kpi__bar--amber { background: var(--amber); }

/* ── Bar chart ───────────────────────────────────────────── */
.bar-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.bar__meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
}

.bar__name {
  font-size: 12px;
  color: var(--muted);
}

.bar__val {
  font-size: 12px;
  font-weight: 500;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.bar__track {
  height: 4px;
  background: var(--s3);
  border-radius: 2px;
  overflow: hidden;
}

.bar__fill {
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  transition: width var(--transition-bar);
  min-width: 3px;
}

/* ── Risk rows ───────────────────────────────────────────── */
.risk-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}

.risk-row:last-of-type { border: none; }

.risk__lbl { color: var(--muted); }

/* ── Pills ───────────────────────────────────────────────── */
.pill {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 20px;
}

.pill--red {
  background: rgba(224, 72, 72, 0.12);
  color: var(--red);
  border: 1px solid rgba(224, 72, 72, 0.25);
}

.pill--amber {
  background: rgba(212, 133, 58, 0.12);
  color: var(--amber);
  border: 1px solid rgba(212, 133, 58, 0.25);
}

.pill--green {
  background: rgba(28, 184, 122, 0.12);
  color: var(--green);
  border: 1px solid rgba(28, 184, 122, 0.25);
}

/* ── Progress bar ────────────────────────────────────────── */
.pbar-wrap {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.pbar__lbl {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 6px;
}

.pbar__row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pbar__track {
  flex: 1;
  height: 6px;
  background: var(--s3);
  border-radius: 3px;
  overflow: hidden;
}

.pbar__fill {
  height: 6px;
  background: var(--red);
  border-radius: 3px;
  transition: width 0.5s;
  width: 0%;
}

.pbar__pct {
  font-size: 12px;
  font-weight: 500;
  color: var(--red);
  min-width: 36px;
  text-align: right;
}

/* ── Compare table ───────────────────────────────────────── */
.compare-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.compare-row:last-child { border: none; }

.compare-row--total {
  border-top: 1px solid var(--border2);
  padding-top: 16px;
  margin-top: 4px;
  border-bottom: none;
}

.compare__lbl { color: var(--muted); }

.compare__lbl--strong {
  font-weight: 500;
  color: var(--text);
}

.compare__val {
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.compare__val--red   { color: var(--red); }
.compare__val--green { color: var(--green); }

.compare__val--big {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 400;
}

/* ── Multiplier ──────────────────────────────────────────── */
.mult__sub {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}

.mult__num {
  font-family: var(--serif);
  font-size: 60px;
  font-weight: 400;
  color: var(--green);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  transition: color var(--transition);
}

.mult__desc {
  font-size: 13px;
  color: var(--muted);
  margin-top: 8px;
}

/* ── Payback box ─────────────────────────────────────────── */
.payback-box {
  margin-top: 20px;
  width: 100%;
  background: var(--s2);
  border-radius: var(--radius-md);
  padding: 16px;
  border: 1px solid var(--border);
}

.payback__lbl {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 6px;
}

.payback__val {
  font-family: var(--serif);
  font-size: 26px;
  color: var(--green);
}

/* ── CTA ─────────────────────────────────────────────────── */
.cta {
  margin-top: 52px;
  padding: 36px;
  background: var(--s1);
  border: 1px solid var(--border2);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cta h3 {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 400;
  margin-bottom: 6px;
}

.cta p {
  font-size: 13px;
  color: var(--muted);
}

.cta__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, transform 0.1s;
  white-space: nowrap;
}

.btn:active { transform: scale(0.98); }

.btn--primary {
  background: var(--accent);
  color: #fff;
}

.btn--primary:hover { background: var(--accent-d); }

.btn--outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border2);
}

.btn--outline:hover { background: var(--s2); }

/* ── Footer ──────────────────────────────────────────────── */
.footer {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer__brand {
  font-family: var(--serif);
  font-size: 18px;
  color: var(--muted);
}

.footer__note {
  font-size: 11px;
  color: var(--dim);
  max-width: 480px;
}

/* ── Animations ──────────────────────────────────────────── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 680px) {
  .g2,
  .g4 { grid-template-columns: 1fr 1fr; }

  h1 { font-size: 32px; }

  .hero { padding: 48px 0 36px; }

  .cta { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 400px) {
  .g2,
  .g4 { grid-template-columns: 1fr; }

  .shell { padding: 0 16px 80px; }
}

/* ── Print ───────────────────────────────────────────────── */
@media print {
  body {
    background: #fff;
    color: #111;
  }

  .cta,
  .btn { display: none; }

  .panel,
  .kpi,
  .payback-box {
    border: 1px solid #ddd;
    background: #f9f9f9;
  }

  .hero::after { display: none; }
}