/* ============================================
   Tibio — sistema de diseño
   Paleta: noche austral + resplandor interior
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400..700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;600&display=swap');

:root{
  --ink:        #1B2027;
  --ink-soft:   #4B5259;
  --paper:      #F2EEE6;
  --paper-dim:  #E7E1D4;
  --night:      #121B24;
  --night-soft: #1C2732;
  --lake:       #3E7C8C;
  --lake-dim:   #2C5A66;
  --ember:      #E2933E;
  --ember-soft: #F4C98A;
  --line:       #D8D0C2;
  --line-dark:  #2C3945;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius: 3px;
}

*{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  margin:0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,h2,h3{
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  margin: 0 0 0.4em;
  letter-spacing: -0.01em;
}

h1{ font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 500; }
h2{ font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3{ font-size: 1.25rem; }

p{ margin: 0 0 1.1em; max-width: 68ch; }

a{ color: var(--lake-dim); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover{ color: var(--ember); }

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

.wrap{
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--lake-dim);
  display: inline-block;
  margin-bottom: 0.9em;
}

/* ---------- Header ---------- */
header.site{
  background: var(--night);
  color: var(--paper);
  padding: 20px 0;
  border-bottom: 1px solid var(--line-dark);
}
header.site .wrap{
  display:flex; align-items:center; justify-content:space-between;
  flex-wrap: wrap; gap: 12px;
}
.logo{
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--paper);
  text-decoration: none;
  display:flex; align-items:baseline; gap:8px;
}
.logo em{
  font-style: normal;
  color: var(--ember);
}
nav.site a{
  color: var(--paper);
  opacity: 0.82;
  text-decoration: none;
  margin-left: 26px;
  font-size: 0.95rem;
}
nav.site a:hover{ opacity: 1; color: var(--ember-soft); }

/* ---------- Hero ---------- */
.hero{
  background: var(--night);
  color: var(--paper);
  padding: 64px 0 0;
  overflow: hidden;
}
.hero .wrap{
  display:grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items:center;
}
@media (max-width: 820px){
  .hero .wrap{ grid-template-columns: 1fr; }
}
.hero h1{ color: var(--paper); }
.hero .lede{
  color: #C7CDD3;
  font-size: 1.15rem;
  max-width: 46ch;
}
.hero-actions{ display:flex; gap:14px; flex-wrap: wrap; margin-top: 8px; }

.btn{
  display:inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 22px;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.15s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn-ember{ background: var(--ember); color: var(--night); }
.btn-ember:hover{ background: var(--ember-soft); color: var(--night); }
.btn-outline{ border-color: rgba(242,238,230,0.4); color: var(--paper); }
.btn-outline:hover{ border-color: var(--ember-soft); color: var(--ember-soft); }

/* ---------- Diagrama de casa (elemento firma) ---------- */
.house-diagram{ width:100%; max-width: 480px; margin: 0 auto; display:block; }
.house-diagram .loss-label{
  font-family: var(--font-mono);
  font-size: 11px;
  fill: #C7CDD3;
}
.house-diagram .loss-pct{
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 15px;
  fill: var(--ember-soft);
}
.house-diagram .heat-path{
  stroke: var(--ember);
  stroke-width: 2;
  fill: none;
  stroke-dasharray: 5 5;
  opacity: 0.85;
}
.house-diagram .house-line{ stroke: #7C8792; stroke-width: 1.6; fill: none; }
.house-diagram .house-fill{ fill: var(--night-soft); }

/* ---------- Secciones ---------- */
section{ padding: 72px 0; }
.section-alt{ background: var(--paper-dim); }

.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
@media (max-width: 780px){ .grid-3{ grid-template-columns: 1fr; } }

.card{
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
}
.card .num{
  font-family: var(--font-mono);
  color: var(--lake-dim);
  font-size: 0.85rem;
  display:block;
  margin-bottom: 10px;
}

/* ---------- Artículos / listado ---------- */
.post-list{ display:flex; flex-direction:column; gap: 0; }
.post-row{
  display:flex; justify-content:space-between; align-items:baseline;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  text-decoration:none;
  color: var(--ink);
}
.post-row:hover .post-title{ color: var(--lake-dim); }
.post-row .post-title{ font-family: var(--font-display); font-size: 1.15rem; }
.post-row .post-meta{ font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink-soft); white-space:nowrap; }

/* ---------- Artículo individual ---------- */
article.post{ padding: 56px 0 90px; }
article.post .post-header{ max-width: 68ch; margin-bottom: 40px; }
article.post .post-meta-line{
  font-family: var(--font-mono); font-size: 0.82rem; color: var(--ink-soft);
  margin-bottom: 16px;
}
article.post h2{ margin-top: 1.4em; }
article.post ul, article.post ol{ max-width: 68ch; padding-left: 1.3em; }
article.post li{ margin-bottom: 0.5em; }
.callout{
  background: var(--paper-dim);
  border-left: 3px solid var(--lake);
  padding: 18px 22px;
  max-width: 62ch;
  margin: 28px 0;
  font-size: 0.95rem;
}
.price-table{ width:100%; max-width: 68ch; border-collapse: collapse; margin: 24px 0; font-size:0.95rem; }
.price-table th, .price-table td{ text-align:left; padding: 10px 14px; border-bottom:1px solid var(--line); }
.price-table th{ font-family: var(--font-mono); font-size:0.78rem; text-transform:uppercase; letter-spacing:0.05em; color: var(--ink-soft); }
.price-table td:last-child, .price-table th:last-child{ font-family: var(--font-mono); }

/* ---------- Calculadora ---------- */
.calc-box{
  background: var(--night);
  color: var(--paper);
  border-radius: 6px;
  padding: 40px;
  max-width: 720px;
}
.calc-row{ display:grid; grid-template-columns: 1fr 1fr; gap:20px; margin-bottom:20px; }
@media (max-width:600px){ .calc-row{ grid-template-columns: 1fr; } }
.calc-field label{
  display:block; font-family: var(--font-mono); font-size:0.78rem;
  text-transform:uppercase; letter-spacing:0.06em; color:#9AA4AD; margin-bottom:8px;
}
.calc-field input, .calc-field select{
  width:100%; padding:12px 14px; font-family: var(--font-body); font-size:1rem;
  background: var(--night-soft); border:1px solid var(--line-dark); color: var(--paper);
  border-radius: var(--radius);
}
.calc-result{
  margin-top: 28px; padding-top: 24px; border-top:1px solid var(--line-dark);
}
.calc-result .big-number{
  font-family: var(--font-mono); font-size: 2.6rem; color: var(--ember-soft); font-weight:600;
  line-height:1;
}
.calc-result .big-label{ font-size:0.9rem; color:#9AA4AD; margin-top:6px; }
.calc-disclaimer{ font-size: 0.82rem; color:#9AA4AD; margin-top:18px; max-width:60ch; }

/* ---------- Footer ---------- */
footer.site{
  background: var(--night);
  color: #9AA4AD;
  padding: 44px 0;
  font-size: 0.88rem;
}
footer.site a{ color: #C7CDD3; }
footer.site .wrap{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:16px; }