/* calculadoraparo.es — clean, fast, no frameworks. System fonts only. */
:root {
  --navy: #0b2b3a;
  --blue: #0e7490;
  --blue-dark: #0a5a70;
  --teal: #0f766e;
  --amber: #f59e0b;
  --bg: #f2f7f8;
  --card: #ffffff;
  --text: #1c2b3a;
  --muted: #5b6b7c;
  --line: #d9e6e8;
  --radius: 16px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background: var(--bg); color: var(--text); line-height: 1.65; font-size: 17px; }
a { color: var(--blue); }
h1, h2, h3 { line-height: 1.25; color: var(--navy); }
h1 { font-size: 2rem; margin: 0 0 12px; }
h2 { font-size: 1.45rem; margin: 44px 0 12px; }
h3 { font-size: 1.15rem; margin: 28px 0 8px; }
p { margin: 0 0 14px; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { background: #ffffff; color: var(--navy); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; }
.logo { color: var(--navy); text-decoration: none; font-weight: 800; font-size: 1.25rem; }
.logo span { color: var(--blue); }
.site-nav { display: flex; gap: 4px 18px; flex-wrap: wrap; }
.site-nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.site-nav a:hover { color: var(--blue); text-decoration: underline; }

/* Hero + calculator */
.hero { background: linear-gradient(135deg, #0b2b3a 0%, #0e7490 100%); color: #fff; padding: 40px 0 34px; }
.hero h1 { color: #fff; }
.hero p.lead { color: #d7e5f5; font-size: 1.1rem; max-width: 720px; }
.trustbar { display: flex; gap: 8px 22px; flex-wrap: wrap; margin-top: 18px; font-size: 0.92rem; color: #bcd3ea; }
.trustbar strong { color: #fff; }
.calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 26px; align-items: start; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: 0 2px 10px rgba(15, 42, 74, 0.06); }
.calc-form label { display: block; font-weight: 600; margin: 16px 0 6px; color: var(--navy); }
.calc-form label:first-child { margin-top: 0; }
.calc-form input[type="number"], .calc-form select { width: 100%; padding: 12px 14px; font-size: 1rem; border: 1.5px solid var(--line); border-radius: 9px; background: #fff; color: var(--text); }
.calc-form input[type="number"]:focus, .calc-form select:focus { outline: 2px solid var(--blue); border-color: var(--blue); }
.calc-form input[type="range"] { width: 100%; accent-color: var(--blue); }
.hint { font-size: 0.88rem; color: var(--muted); font-weight: 400; }
.checkline { display: flex; gap: 8px; align-items: flex-start; margin-top: 18px; font-weight: 600; color: var(--navy); }
.checkline input { margin-top: 4px; }
.bases-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.bases-grid label { margin: 0; font-size: 0.9rem; }
.btn { display: inline-block; background: var(--amber); color: #1c1005; border: none; border-radius: 12px; padding: 15px 26px; font-size: 1.08rem; font-weight: 800; cursor: pointer; margin-top: 20px; width: 100%; }
.btn:hover { background: #d97706; color: #fff; }
.result-sticky { position: sticky; top: 16px; }
.result-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.result-card { background: #e6f4f1; border: 1px solid #bfe3dd; border-radius: 12px; padding: 16px; }
.result-card span { display: block; font-size: 0.85rem; color: var(--muted); font-weight: 600; }
.result-card strong { font-size: 1.65rem; color: #0b2b3a; }
.result-card small { display: block; color: var(--muted); font-size: 0.85rem; }
.result-note { font-size: 0.92rem; color: var(--muted); margin-top: 14px; }
.result-actions { margin-top: 16px; display: flex; gap: 10px; flex-wrap: wrap; }
.result-actions button { background: #fff; border: 1.5px solid var(--blue); color: var(--blue); border-radius: 9px; padding: 10px 16px; font-weight: 700; cursor: pointer; }
.result-actions button:hover { background: #eef5ff; }
.timeline { list-style: none; padding: 0; margin: 12px 0 0; }
.timeline li { display: flex; justify-content: space-between; gap: 12px; padding: 9px 4px; border-bottom: 1px solid var(--line); font-size: 0.96rem; }
.timeline li em { color: var(--amber); font-style: normal; font-weight: 700; }
.result-empty { color: var(--muted); }

/* Tables */
table { width: 100%; border-collapse: collapse; margin: 14px 0 20px; font-size: 0.98rem; }
th, td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; }
th { background: #eef3f9; color: var(--navy); }
tbody tr:nth-child(even) { background: #fafcfe; }

/* Content sections */
.content { padding-bottom: 30px; }
.steps { padding-left: 22px; }
.steps li { margin-bottom: 8px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 18px; margin-bottom: 10px; }
.faq summary { font-weight: 700; color: var(--navy); cursor: pointer; }
.faq p { margin: 10px 0 0; }
.sources { font-size: 0.92rem; color: var(--muted); }
.callout { background: #fff8e6; border: 1px solid #f2d492; border-radius: 10px; padding: 16px 18px; margin: 18px 0; }
.callout strong { color: #7a5200; }

/* Footer */
.site-footer { background: var(--navy); color: #bcd3ea; padding: 30px 0; font-size: 0.92rem; }
.site-footer a { color: #fff; }
.site-footer .wrap p { margin-bottom: 8px; }

@media (max-width: 820px) {
  .calc-grid { grid-template-columns: 1fr; }
  .result-sticky { position: static; }
  h1 { font-size: 1.6rem; }
  body { font-size: 16px; }
}
@media print {
  .site-header, .site-nav, .calc-form, .result-actions, .site-footer { display: none !important; }
  body { background: #fff; }
  .card { box-shadow: none; }
}