/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #f7f8f4;
  --surface: #ffffff;
  --ink: #17201a;
  --muted: #5b665e;
  --line: #e1e6df;
  --accent: #1f9d55;
  --accent-ink: #ffffff;
  --accent-soft: #e3f4ea;
  --protein: #e4572e;
  --carbs: #f2a03d;
  --fat: #3a7ca5;
  --warn-bg: #fff4e0;
  --warn-ink: #7a4b00;
  --radius: 18px;
  --shadow: 0 10px 30px -18px rgba(23, 32, 26, .35);
  --sans: "Manrope", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Bricolage Grotesque", var(--sans);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1411;
    --surface: #171e19;
    --ink: #eef2ee;
    --muted: #a3ada6;
    --line: #2a332d;
    --accent: #34c172;
    --accent-ink: #08130c;
    --accent-soft: #173323;
    --warn-bg: #3a2c12;
    --warn-ink: #f7d99c;
    --shadow: 0 10px 30px -18px rgba(0, 0, 0, .8);
    color-scheme: dark;
  }
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
a { color: var(--accent); }
p { text-wrap: pretty; }
h1, h2, h3 { text-wrap: balance; line-height: 1.1; letter-spacing: -0.02em; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

/* =============================================================
   3. Utilities
   ============================================================= */
.skip-link {
  position: fixed; top: -100px; left: 1rem; z-index: 99;
  padding: .6rem 1rem; background: var(--surface); color: var(--ink); border-radius: 8px;
}
.skip-link:focus { top: 1rem; }
.container { width: min(100% - 32px, 1080px); margin-inline: auto; }
.narrow { width: min(100% - 32px, 760px); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* =============================================================
   4. Header & footer
   ============================================================= */
.site-header { border-bottom: 1px solid var(--line); background: var(--surface); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 60px; }
.logo { display: flex; align-items: center; gap: .5rem; font-family: var(--display); font-weight: 800; font-size: 1.25rem; color: var(--ink); text-decoration: none; }
.logo b { font-weight: inherit; }
.logo span { color: var(--accent); }
.logo svg { width: 28px; height: 28px; }
.nav { display: flex; gap: 1.1rem; font-size: .95rem; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 600; }
.nav a:hover { color: var(--ink); }

.site-footer { margin-top: 4rem; padding: 2rem 0 3rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.site-footer .container { display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: space-between; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: .5rem 1.2rem; }
.site-footer a { color: var(--muted); }

/* =============================================================
   5. Hero + tool card
   ============================================================= */
.hero { padding: 1.6rem 0 1rem; }
.hero h1 { font-family: var(--display); font-size: clamp(1.7rem, 5vw, 2.6rem); font-weight: 800; }
.hero p { color: var(--muted); margin-top: .4rem; max-width: 60ch; }

.tool-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.1rem;
  display: grid;
  gap: 1.2rem;
}

.form { display: grid; gap: .85rem; grid-template-columns: 1fr 1fr; }
.field { display: grid; gap: .3rem; }
.field.full { grid-column: 1 / -1; }
.field label, .field legend { font-size: .82rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.field input, .field select {
  width: 100%;
  padding: .65rem .75rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg);
  font-size: 1rem;
}
.field input:focus, .field select:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-soft); }
.input-unit { position: relative; }
.input-unit input { padding-right: 2.6rem; }
.input-unit span { position: absolute; right: .8rem; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: .9rem; pointer-events: none; }

fieldset.field { border: 0; padding: 0; }
.segmented { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 4px; padding: 4px; border-radius: 12px; background: var(--bg); border: 1px solid var(--line); }
.segmented input { position: absolute; opacity: 0; pointer-events: none; }
.segmented label {
  text-align: center; padding: .5rem .4rem; border-radius: 9px; cursor: pointer;
  font-size: .92rem; font-weight: 700; text-transform: none; letter-spacing: 0; color: var(--muted);
  transition: background .2s var(--ease-out), color .2s var(--ease-out);
}
.segmented input:checked + label { background: var(--accent); color: var(--accent-ink); }
.segmented input:focus-visible + label { outline: 2px solid var(--accent); outline-offset: 2px; }

.error-msg { grid-column: 1 / -1; color: var(--protein); font-weight: 600; font-size: .92rem; }

/* Results */
.results { display: grid; gap: 1rem; align-content: start; }
.tool-card[data-state="idle"] .results-body,
.tool-card[data-state="error"] .results-body { display: none; }
.tool-card:not([data-state="idle"]) .results-empty { display: none; }
.results-empty { color: var(--muted); padding: 1rem; border: 1px dashed var(--line); border-radius: 14px; text-align: center; }

.kcal-box { background: var(--accent-soft); border-radius: 14px; padding: 1rem 1.1rem; }
.kcal-box small { display: block; font-weight: 700; color: var(--muted); text-transform: uppercase; font-size: .78rem; letter-spacing: .05em; }
.kcal-value { font-family: var(--display); font-size: clamp(2.2rem, 8vw, 3rem); font-weight: 800; line-height: 1; margin-top: .25rem; }
.kcal-value span { font-size: 1rem; font-weight: 700; color: var(--muted); }
.kcal-meta { color: var(--muted); font-size: .9rem; margin-top: .35rem; }

.macro-bar { display: flex; height: 14px; border-radius: 99px; overflow: hidden; background: var(--line); }
.macro-bar i { display: block; height: 100%; transition: width .4s var(--ease-out); }
.macro-bar .p { background: var(--protein); }
.macro-bar .c { background: var(--carbs); }
.macro-bar .f { background: var(--fat); }

.macros { display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; }
.macro { border: 1px solid var(--line); border-radius: 14px; padding: .75rem; border-top: 4px solid; }
.macro.p { border-top-color: var(--protein); }
.macro.c { border-top-color: var(--carbs); }
.macro.f { border-top-color: var(--fat); }
.macro h3 { font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.macro .g { font-family: var(--display); font-size: 1.6rem; font-weight: 800; }
.macro .g span { font-size: .9rem; color: var(--muted); }
.macro .sub { font-size: .8rem; color: var(--muted); line-height: 1.4; }

.meals { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; font-size: .92rem; }
.meals select { padding: .35rem .5rem; border-radius: 9px; border: 1px solid var(--line); background: var(--bg); }
.meals-out { width: 100%; color: var(--muted); }
.meals-out strong { color: var(--ink); }

.tip { background: var(--warn-bg); color: var(--warn-ink); border-radius: 12px; padding: .7rem .85rem; font-size: .9rem; }
.tip[hidden] { display: none; }

.actions { display: flex; flex-wrap: wrap; gap: .6rem; }
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .65rem 1rem; border-radius: 12px; font-weight: 700;
  background: var(--accent); color: var(--accent-ink);
  transition: transform .2s var(--ease-out), filter .2s;
}
.btn:hover { filter: brightness(1.05); }
.btn:active { transform: scale(.97); }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }

.badge { display: flex; gap: .5rem; align-items: flex-start; color: var(--muted); font-size: .88rem; margin-top: .9rem; }
.badge svg { flex: none; width: 18px; height: 18px; margin-top: 2px; color: var(--accent); }

.noscript { padding: 1rem; border-radius: 12px; background: var(--warn-bg); color: var(--warn-ink); }

/* =============================================================
   6. Content sections
   ============================================================= */
.ad-slot {
  min-height: 110px; margin: 2rem auto; display: grid; place-items: center;
  border: 1px dashed var(--line); border-radius: 12px; color: var(--muted); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase;
}

.section { margin-top: 3rem; }
.section h2 { font-family: var(--display); font-size: clamp(1.4rem, 4vw, 1.9rem); margin-bottom: 1rem; }
.section h3 { font-size: 1.1rem; margin: 1.4rem 0 .4rem; }
.prose p, .prose ul, .prose ol { margin-bottom: 1rem; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin-bottom: .35rem; }

.steps { display: grid; gap: .8rem; counter-reset: s; list-style: none; padding: 0; }
.steps li { counter-increment: s; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 1rem 1rem 1rem 3.4rem; position: relative; }
.steps li::before {
  content: counter(s); position: absolute; left: 1rem; top: 1rem;
  width: 1.7rem; height: 1.7rem; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent); color: var(--accent-ink); font-weight: 800; font-size: .9rem;
}
.steps strong { display: block; }

.formula { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: .8rem 1rem; font-size: .92rem; overflow-x: auto; }

.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: .9rem 1rem; margin-bottom: .6rem; }
.faq summary { cursor: pointer; font-weight: 700; }
.faq details p { margin-top: .6rem; color: var(--muted); }

.tools-grid { display: grid; gap: .8rem; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.tool-link { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 1rem; }
.tool-link strong { display: block; }
.tool-link span { color: var(--muted); font-size: .9rem; }
.tool-link .soon { display: inline-block; margin-top: .5rem; font-size: .72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; color: var(--accent); background: var(--accent-soft); padding: .15rem .5rem; border-radius: 99px; }

.author { display: flex; gap: 1rem; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 1rem; }
.author .avatar { flex: none; width: 56px; height: 56px; border-radius: 50%; background: var(--accent-soft); display: grid; place-items: center; font-family: var(--display); font-weight: 800; color: var(--accent); font-size: 1.3rem; }
.author p { font-size: .92rem; color: var(--muted); }
.author strong { color: var(--ink); }

.disclaimer { margin-top: 1.5rem; font-size: .85rem; color: var(--muted); }

/* Legal pages */
.legal { padding-top: 2rem; }
.legal h1 { font-family: var(--display); font-size: clamp(1.7rem, 5vw, 2.3rem); margin-bottom: 1rem; }
.legal h2 { font-size: 1.2rem; margin: 1.8rem 0 .5rem; }
.legal .todo { background: var(--warn-bg); color: var(--warn-ink); padding: .1rem .35rem; border-radius: 4px; }

/* =============================================================
   8. Responsive
   ============================================================= */
@media (max-width: 539px) {
  .nav .hide-sm { display: none; }
  .macros { grid-template-columns: 1fr; }
  .macro { display: flex; justify-content: space-between; align-items: center; gap: .5rem; }
  .macro .g { font-size: 1.35rem; }
}
@media (min-width: 720px) {
  .tool-card { padding: 1.5rem; }
}
@media (min-width: 960px) {
  .tool-card { grid-template-columns: 1.05fr 1fr; gap: 1.8rem; }
  .hero { padding: 2.4rem 0 1.4rem; }
}

/* =============================================================
   9. Reduced motion
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* =============================================================
   10. Blog y artículos
   ============================================================= */
.article { padding-top: 1.6rem; }
.crumbs { font-size: .85rem; color: var(--muted); margin-bottom: .8rem; }
.crumbs a { color: var(--muted); }
.article h1 { font-family: var(--display); font-size: clamp(1.8rem, 5.5vw, 2.7rem); font-weight: 800; }
.article .lead { font-size: 1.12rem; color: var(--muted); margin-top: .7rem; }
.byline { display: flex; flex-wrap: wrap; gap: .3rem 1rem; font-size: .88rem; color: var(--muted); margin: 1rem 0 1.6rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
.byline strong { color: var(--ink); }
.article h2 { font-family: var(--display); font-size: clamp(1.4rem, 4vw, 1.8rem); margin: 2.4rem 0 .8rem; }
.article h3 { font-size: 1.12rem; margin: 1.5rem 0 .4rem; }

.summary { background: var(--accent-soft); border-radius: 14px; padding: 1rem 1.2rem; margin-bottom: 1.4rem; }
.summary h2 { font-family: var(--sans); font-size: 1rem; margin: 0 0 .5rem; text-transform: uppercase; letter-spacing: .05em; }
.summary ul { margin: 0; }

.toc { border: 1px solid var(--line); border-radius: 14px; padding: 1rem 1.2rem; background: var(--surface); margin-bottom: 1rem; }
.toc strong { display: block; margin-bottom: .4rem; }
.toc ol { margin: 0; padding-left: 1.2rem; }
.toc a { color: var(--ink); }

.table-wrap { overflow-x: auto; margin: 1rem 0 1.4rem; border: 1px solid var(--line); border-radius: 12px; }
.table-wrap table { width: 100%; border-collapse: collapse; font-size: .92rem; min-width: 520px; background: var(--surface); }
.table-wrap th, .table-wrap td { text-align: left; padding: .6rem .75rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.table-wrap th { background: var(--bg); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.table-wrap tr:last-child td { border-bottom: 0; }

.callout { border-left: 4px solid var(--accent); background: var(--surface); border-radius: 0 12px 12px 0; padding: .9rem 1.1rem; margin: 1.2rem 0; }
.callout.mine { border-left-color: var(--carbs); }
.callout p:last-child { margin-bottom: 0; }

.cta-tool { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .8rem; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 1rem 1.2rem; margin: 1.6rem 0; box-shadow: var(--shadow); }
.cta-tool p { margin: 0; }
.cta-tool .btn { text-decoration: none; }

.sources { font-size: .88rem; color: var(--muted); }
.sources li { margin-bottom: .5rem; }

.post-list { display: grid; gap: 1rem; list-style: none; padding: 0; }
.post-card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 1.1rem 1.2rem; }
.post-card a { color: var(--ink); text-decoration: none; }
.post-card h2, .post-card h3 { font-size: 1.25rem; margin: 0 0 .4rem; font-family: var(--display); }
.post-card p { color: var(--muted); font-size: .95rem; }
.post-card .tag { display: inline-block; font-size: .72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; color: var(--accent); margin-bottom: .4rem; }