/* =============================================================
   1. Tokens
   ============================================================= */
:root {
  --bg: #2b2b2b;
  --bg-alt: #363636;
  --card: #333333;
  --ink: #f2ede6;
  --ink-soft: #b7ada2;
  --border: #4a4a48;
  --accent: #d9805a;
  --accent-dark: #d7410e;
  --accent-soft: #4a352a;
  --olive: #9caa6c;
  --terracota: #d9805a;
  --ok: #8fa876;
  --warn: #e08a5c;
  --shadow: 0 2px 14px rgba(0, 0, 0, 0.45);
  --radius: 14px;
  --radius-sm: 8px;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --display: "Barlow Condensed", -apple-system, "Segoe UI", sans-serif;
  --stat: "Rajdhani", -apple-system, "Segoe UI", sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* =============================================================
   2. Reset & base
   ============================================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
input, select { font: inherit; color: inherit; }
p { text-wrap: pretty; }
h1, h2 { text-wrap: balance; line-height: 1.05; font-family: var(--display); font-style: italic; font-weight: 800; letter-spacing: -0.01em; }
h3, h4 { text-wrap: balance; line-height: 1.15; font-family: var(--stat); font-weight: 700; }
::selection { background: var(--accent-soft); color: var(--accent-dark); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* =============================================================
   3. Utilities
   ============================================================= */
.container { width: 100%; max-width: 880px; margin: 0 auto; padding: 0 20px; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--accent); color: #fff;
  z-index: 9999; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { top: 1rem; }

/* =============================================================
   4. Header
   ============================================================= */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; padding-bottom: 14px;
}
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.15rem; color: var(--accent-dark); }
.logo-img { height: 32px; width: auto; display: block; }
.main-nav { display: flex; gap: 18px; align-items: center; }
.main-nav a {
  font-family: var(--display); font-size: 1.05rem; font-weight: 600; color: var(--ink-soft);
  padding: 6px 4px; border-bottom: 2px solid transparent;
  transition: color .2s var(--ease-out), border-color .2s var(--ease-out);
}
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--accent-dark); border-color: var(--accent); }

/* =============================================================
   5. Hero
   ============================================================= */
.hero { padding-top: 44px; padding-bottom: 24px; text-align: center; }
.hero h1 { font-size: clamp(1.7rem, 4.5vw, 2.6rem); color: var(--accent-dark); margin-bottom: 10px; }
.hero p.sub { color: var(--ink-soft); font-size: clamp(1rem, 2vw, 1.15rem); max-width: 620px; margin: 0 auto; }

/* =============================================================
   6. Tool card
   ============================================================= */
.tool-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin: 28px 0;
}
.form-grid {
  display: grid; grid-template-columns: 1fr; gap: 16px; min-width: 0;
}
@media (min-width: 540px) {
  .form-grid { grid-template-columns: 1fr 1fr; }
  .form-grid .full { grid-column: 1 / -1; }
}
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field label { font-size: .85rem; font-weight: 600; color: var(--ink-soft); }
.field input, .field select {
  padding: 11px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); color: var(--ink); font-size: 1rem;
  transition: border-color .2s var(--ease-out);
}
.field input:focus, .field select:focus { border-color: var(--accent); }
.goal-toggle { display: flex; gap: 8px; flex-wrap: wrap; }
.goal-toggle button {
  flex: 1 1 auto; min-width: 110px; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg); font-family: var(--display); font-weight: 600; font-size: 1rem; text-align: center;
  transition: background .2s var(--ease-out), color .2s var(--ease-out), border-color .2s var(--ease-out);
}
.goal-toggle button[aria-pressed="true"] {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; margin-top: 20px; padding: 14px 20px;
  background: var(--accent); color: #fff; font-family: var(--display); font-weight: 600; font-size: 1.15rem;
  border-radius: var(--radius-sm);
  transition: background .2s var(--ease-out), transform .15s var(--ease-out);
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-primary:active { transform: scale(0.98); }
.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 18px; background: transparent; color: var(--accent-dark);
  border: 1px solid var(--accent-soft); font-family: var(--display); font-weight: 600; font-size: 1.05rem; border-radius: var(--radius-sm);
  transition: background .2s var(--ease-out);
}
.btn-secondary:hover { background: var(--accent-soft); }

/* States */
.tool-card[data-state="idle"] .result-zone { display: none; }
.tool-card[data-state="done"] .result-zone { display: block; }
.result-zone { margin-top: 24px; padding-top: 22px; border-top: 1px dashed var(--border); }

/* Results table */
.macro-table { width: 100%; border-collapse: collapse; margin-top: 14px; font-size: .95rem; }
.macro-table caption { text-align: left; font-weight: 700; margin-bottom: 8px; color: var(--ink); }
.macro-table th, .macro-table td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
.macro-table thead th { color: var(--ink-soft); font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; }
.macro-table tbody tr:last-child td { border-bottom: none; }
.macro-table tbody td:last-child, .macro-table tfoot td:last-child { font-family: var(--stat); font-weight: 700; font-size: 1.05rem; }
.macro-table .swatch { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 8px; vertical-align: middle; }
.swatch.protein { background: var(--olive); }
.swatch.carbs { background: var(--terracota); }
.swatch.fat { background: var(--accent-dark); }
.macro-table tfoot td { font-weight: 700; border-top: 2px solid var(--border); border-bottom: none; }

.kcal-highlight {
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap;
  background: var(--bg-alt); border-radius: var(--radius-sm); padding: 16px 18px; margin-top: 4px;
}
.kcal-highlight strong { font-size: 2.1rem; font-family: var(--stat); font-weight: 700; color: var(--accent-dark); }
.kcal-highlight span { color: var(--ink-soft); font-size: .95rem; }

.macro-bars { display: grid; gap: 10px; margin-top: 16px; }
.macro-bar-row { display: grid; grid-template-columns: 90px 1fr auto; align-items: center; gap: 10px; font-size: .9rem; }
.macro-bar-row span:last-child { font-family: var(--stat); font-weight: 700; }
.macro-bar-track { height: 10px; border-radius: 6px; background: var(--bg-alt); overflow: hidden; }
.macro-bar-fill { height: 100%; border-radius: 6px; }
.macro-bar-fill.protein { background: var(--olive); }
.macro-bar-fill.carbs { background: var(--terracota); }
.macro-bar-fill.fat { background: var(--accent-dark); }

.result-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }

/* =============================================================
   7. Plate calculator specific
   ============================================================= */
.plate-add-row { display: grid; grid-template-columns: 1fr 110px auto; gap: 10px; align-items: end; }
@media (max-width: 539px) { .plate-add-row { grid-template-columns: 1fr; } }
.plate-items { list-style: none; margin-top: 16px; display: grid; gap: 8px; }
.plate-item {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  background: var(--bg-alt); border-radius: var(--radius-sm); padding: 10px 14px; font-size: .92rem;
}
.plate-item .meta { color: var(--ink-soft); font-size: .82rem; }
.plate-item button { color: var(--warn); font-weight: 700; font-size: 1.1rem; line-height: 1; padding: 4px; }
.empty-note { color: var(--ink-soft); font-size: .9rem; font-style: italic; margin-top: 10px; }

/* =============================================================
   8. Privacy badge / limits
   ============================================================= */
.privacy-badge {
  display: flex; align-items: center; gap: 10px; font-size: .85rem; color: var(--ink-soft);
  margin-top: 14px;
}
.privacy-badge svg { flex-shrink: 0; width: 18px; height: 18px; color: var(--olive); }

/* =============================================================
   9. Ad slots
   ============================================================= */
.ad-slot {
  display: flex; align-items: center; justify-content: center;
  border: 1px dashed var(--border); border-radius: var(--radius-sm);
  background: var(--bg-alt); color: var(--ink-soft);
  font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 700;
  margin: 28px auto;
}
.ad-slot--banner { min-height: 100px; max-width: 728px; }
.ad-slot--incontent { min-height: 250px; max-width: 336px; }
.ad-slot--footer { min-height: 90px; max-width: 728px; }

/* Popup interstitial (only on explicit download action) */
.ad-popup {
  border: none; border-radius: var(--radius); padding: 0; max-width: 340px; width: calc(100% - 40px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}
.ad-popup::backdrop { background: rgba(30, 22, 15, 0.55); }
.ad-popup-inner { position: relative; padding: 26px 22px 22px; background: var(--card); border-radius: var(--radius); }
.ad-popup-close {
  position: absolute; top: 10px; right: 10px; width: 30px; height: 30px;
  border-radius: 50%; background: var(--bg-alt); font-size: 1.1rem; line-height: 1;
}
.ad-popup-slot {
  display: block; padding: 16px; margin-top: 16px;
  border: 1px solid var(--accent-soft); border-radius: var(--radius-sm); background: var(--bg-alt);
  color: var(--ink); font-size: .92rem; line-height: 1.5;
  transition: border-color .2s var(--ease-out), background .2s var(--ease-out);
}
.ad-popup-slot:hover { border-color: var(--accent); background: var(--accent-soft); }
.ad-popup-slot strong { color: var(--accent-dark); font-family: var(--stat); font-weight: 700; }
.ad-popup-title { font-size: 1.05rem; margin-bottom: 4px; }
.ad-popup-desc { color: var(--ink-soft); font-size: .88rem; }

/* Corner toast */
.ad-toast {
  position: fixed; right: 16px; bottom: 16px; z-index: 80;
  display: flex; align-items: center; gap: 10px;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-sm);
  box-shadow: var(--shadow); padding: 12px 14px; max-width: 260px;
  transform: translateY(20px); opacity: 0; pointer-events: none;
  transition: transform .35s var(--ease-out), opacity .35s var(--ease-out);
}
.ad-toast.is-visible { transform: translateY(0); opacity: 1; pointer-events: auto; }
.ad-toast-label {
  font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 800;
  color: var(--accent-dark); border: 1px solid var(--accent-soft); border-radius: 6px; padding: 6px 8px;
  white-space: nowrap;
}
.ad-toast-text { font-size: .8rem; color: var(--ink-soft); flex: 1; }
.ad-toast-text a { color: var(--accent-dark); font-weight: 600; }
.ad-toast-close { font-size: 1rem; color: var(--ink-soft); padding: 2px 4px; }

/* =============================================================
   10. Content sections
   ============================================================= */
.section { padding-top: 40px; padding-bottom: 40px; }
.section h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); color: var(--accent-dark); margin-bottom: 18px; }
.section > p.lead { color: var(--ink-soft); max-width: 680px; margin-bottom: 22px; }

/* Long-form article content (guías) */
article.section { max-width: 760px; }
article.section p { color: var(--ink-soft); margin-bottom: 16px; }
article.section h2 { margin-top: 36px; }
article.section h2:first-child { margin-top: 0; }
article.section h3 { margin-top: 26px; margin-bottom: 10px; color: var(--accent-dark); }
article.section .macro-table { margin-bottom: 20px; }
article.section li { margin-bottom: 4px; }

.steps { display: grid; gap: 18px; }
@media (min-width: 720px) { .steps { grid-template-columns: repeat(3, 1fr); } }
.step-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow);
}
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-dark);
  font-weight: 700; font-family: var(--stat); margin-bottom: 12px;
}
.step-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.step-card p { color: var(--ink-soft); font-size: .92rem; }

.defs-grid { display: grid; gap: 14px; }
@media (min-width: 720px) { .defs-grid { grid-template-columns: repeat(2, 1fr); } }
.def-card {
  background: var(--bg-alt); border-radius: var(--radius-sm); padding: 16px 18px;
  border-left: 4px solid var(--accent);
}
.def-card h3 { font-size: .98rem; margin-bottom: 6px; color: var(--accent-dark); }
.def-card p { color: var(--ink-soft); font-size: .9rem; }

.faq-list { display: grid; gap: 10px; }
.faq-item {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden;
}
.faq-item summary {
  padding: 14px 16px; font-weight: 600; cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.2rem; color: var(--accent); flex-shrink: 0; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { padding: 0 16px 16px; color: var(--ink-soft); font-size: .92rem; }

.crosslink-card {
  display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  background: linear-gradient(135deg, var(--accent-soft), var(--bg-alt));
  border-radius: var(--radius); padding: 22px; margin: 8px 0 0;
}
.crosslink-card h3 { font-size: 1.1rem; margin-bottom: 4px; }
.crosslink-card p { color: var(--ink-soft); font-size: .9rem; }

/* =============================================================
   11. Footer
   ============================================================= */
.site-footer { border-top: 1px solid var(--border); padding: 28px 0; margin-top: 20px; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 12px 20px; justify-content: space-between; align-items: center; }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-links a { font-family: var(--display); font-weight: 600; color: var(--ink-soft); font-size: .95rem; }
.footer-links a:hover { color: var(--accent-dark); }
.footer-note { color: var(--ink-soft); font-size: .8rem; }

/* =============================================================
   12. Legal pages
   ============================================================= */
.legal-content { padding-top: 40px; padding-bottom: 60px; }
.legal-content h1 { margin-bottom: 18px; color: var(--accent-dark); }
.legal-content h2 { font-size: 1.15rem; margin: 26px 0 10px; color: var(--accent-dark); }
.legal-content p { color: var(--ink-soft); margin-bottom: 10px; }
.legal-content ul { margin: 0 0 12px 1.2em; color: var(--ink-soft); }
.legal-content li { margin-bottom: 6px; }
.legal-content a, article.section p a, article.section li a {
  color: var(--accent-dark); text-decoration: underline; text-underline-offset: 3px;
}
.legal-content a, article.section a { overflow-wrap: anywhere; }
.table-scroll { overflow-x: auto; margin-bottom: 20px; }
.table-scroll .macro-table { margin-bottom: 0; }
@media (max-width: 539px) {
  .table-scroll .macro-table { font-size: .82rem; }
  .table-scroll .macro-table th, .table-scroll .macro-table td { padding: 8px 4px; }
  .table-scroll .macro-table thead th { letter-spacing: 0; font-size: .7rem; }
}

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

/* =============================================================
   14. Print
   ============================================================= */
@media print {
  .site-header, .site-footer, .ad-slot, .ad-toast, .btn-secondary, .plate-add-row { display: none !important; }
}