/* =========================================================
   Kalkulator Kalorii — arkusz stylów główny
   ========================================================= */

:root {
  --c-primary: #16a34a;
  --c-primary-dark: #15803d;
  --c-primary-light: #4ade80;
  --c-accent: #f97316;
  --c-accent-2: #eab308;
  --c-bg: #f7faf7;
  --c-bg-alt: #f0f4ef;
  --c-surface: #ffffff;
  --c-text: #17241a;
  --c-text-muted: #56695a;
  --c-border: #e2e8e0;
  --c-success: #16a34a;
  --c-warning: #d97706;
  --c-danger: #dc2626;
  --c-info: #2563eb;

  --gradient-brand: linear-gradient(135deg, #16a34a 0%, #f97316 100%);
  --gradient-warm: linear-gradient(135deg, #f97316 0%, #eab308 100%);

  --font-heading: "Poppins", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;

  --shadow-sm: 0 2px 8px rgba(23, 36, 26, 0.06);
  --shadow-md: 0 12px 30px rgba(23, 36, 26, 0.10);
  --shadow-lg: 0 25px 60px rgba(22, 163, 74, 0.20);

  --header-h: 76px;
  --container-w: 1180px;
}

:root[data-theme="dark"] {
  --c-bg: #0c1410;
  --c-bg-alt: #101c14;
  --c-surface: #131f16;
  --c-text: #eaf2ea;
  --c-text-muted: #9db8a2;
  --c-border: #22352a;
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 25px 60px rgba(22, 163, 74, 0.3);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --c-bg: #0c1410;
    --c-bg-alt: #101c14;
    --c-surface: #131f16;
    --c-text: #eaf2ea;
    --c-text-muted: #9db8a2;
    --c-border: #22352a;
    --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 25px 60px rgba(22, 163, 74, 0.3);
  }
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.65;
  font-size: clamp(15px, 1.5vw, 16.5px);
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}

img, svg { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.2;
  margin: 0 0 0.6em;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); }
h3 { font-size: clamp(1.15rem, 2.2vw, 1.5rem); }

p { margin: 0 0 1em; color: var(--c-text-muted); }

ul, ol { padding-left: 1.3em; color: var(--c-text-muted); }

.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--c-primary);
  color: #fff;
  padding: 12px 20px;
  z-index: 10000;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
  font-family: var(--font-body);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(0.98); }
.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.btn-outline {
  background: transparent;
  border-color: var(--c-border);
  color: var(--c-text);
}
.btn-outline:hover { border-color: var(--c-primary); color: var(--c-primary); transform: translateY(-2px); }
.btn-block { width: 100%; }
.btn-sm { padding: 9px 18px; font-size: 0.86rem; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--c-surface) 88%, transparent);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid var(--c-border);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(0.82rem, 4.2vw, 1.15rem);
  color: var(--c-text);
  min-width: 0;
  flex-shrink: 1;
}
/* Na szerokim ekranie nazwa serwisu ma zostać w jednej linii — łamanie
   w środku wyrazu („KalkulatorKalo / rii”) wygląda na usterkę. Łamanie
   awaryjne włącza się dopiero na wąskich ekranach, niżej w tym pliku. */
.brand > span { white-space: nowrap; min-width: 0; }
.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--gradient-brand);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-sm);
  transform-style: preserve-3d;
  transition: transform 0.4s ease;
}
.site-header:hover .brand-mark { transform: rotateY(20deg) rotateX(8deg); }
.brand-mark svg { width: 22px; height: 22px; }
.brand span em { color: var(--c-primary); font-style: normal; }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  display: block;
  padding: 10px 15px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.94rem;
  white-space: nowrap;
  color: var(--c-text-muted);
  transition: background 0.2s ease, color 0.2s ease;
}
.main-nav a:hover, .main-nav a[aria-current="page"] {
  background: var(--c-bg-alt);
  color: var(--c-primary-dark);
}

.nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.theme-toggle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--c-border);
  background: var(--c-bg-alt);
  display: grid;
  place-items: center;
  cursor: pointer;
  color: var(--c-text);
  font-size: 1.1rem;
}

.lang-toggle {
  height: 42px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--c-border);
  background: var(--c-bg-alt);
  cursor: pointer;
  color: var(--c-text);
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--font-body);
  transition: border-color 0.2s ease, color 0.2s ease;
}
.lang-toggle:hover { border-color: var(--c-primary); color: var(--c-primary-dark); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--c-border);
  background: var(--c-bg-alt);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Próg podniesiony z 1040px: pasek ma teraz dłuższe etykiety (m.in. „Tabele
   kaloryczności”) i poniżej ~1200px linki łamały się na dwa rzędy, rozpychając
   nagłówek. Menu pod przyciskiem przejmuje nawigację, zanim to nastąpi. */
@media (max-width: 1200px) {
  .nav-toggle { display: flex; }
  /* Na wąskich ekranach nazwa może się złamać — lepiej to niż wypchnięcie
     przycisków menu poza krawędź ekranu. */
  .brand > span { white-space: normal; overflow-wrap: anywhere; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-mark svg { width: 18px; height: 18px; }
  .nav-actions { gap: 8px; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    /* Panel parkuje się przez transform, a nie przez right: -100%. Odsunięty
       offsetem element stał poza prawą krawędzią okna i rozciągał dokument,
       przez co całą stronę dało się przewijać w poziomie. */
    right: 0;
    transform: translateX(100%);
    width: min(320px, 86vw);
    height: calc(100vh - var(--header-h));
    height: calc(100dvh - var(--header-h));
    z-index: 999;
    background: var(--c-surface);
    flex-direction: column;
    align-items: stretch;
    padding: 18px;
    gap: 6px;
    box-shadow: -12px 0 40px rgba(0, 0, 0, 0.18);
    visibility: hidden;
    transition: transform 0.32s ease, visibility 0s linear 0.32s;
    overflow-y: auto;
  }
  .main-nav.is-open {
    transform: translateX(0);
    visibility: visible;
    transition: transform 0.32s ease, visibility 0s linear 0s;
  }
  .main-nav a { padding: 15px 18px; font-size: 1.05rem; border-bottom: 1px solid var(--c-border); border-radius: 12px; }

  .nav-backdrop {
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: rgba(10, 16, 12, 0.45);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.32s ease, visibility 0s linear 0.32s;
  }
  .nav-backdrop.is-open {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.32s ease, visibility 0s linear 0s;
  }
}

/* ---------- Hero / 3D ---------- */
.hero {
  position: relative;
  padding: 64px 0 90px;
  overflow: hidden;
  perspective: 1400px;
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  z-index: 0;
  animation: float-blob 14s ease-in-out infinite;
}
.hero-blob.b1 { width: 420px; height: 420px; background: var(--c-primary-light); top: -120px; left: -100px; }
.hero-blob.b2 { width: 380px; height: 380px; background: var(--c-accent); bottom: -140px; right: -80px; animation-delay: -6s; }
.hero-blob.b3 { width: 260px; height: 260px; background: var(--c-accent-2); top: 40%; left: 46%; opacity: 0.3; animation-delay: -3s; }

@keyframes float-blob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -25px) scale(1.08); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 999px;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--c-primary-dark);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }

.hero-stats { display: flex; gap: 30px; margin-top: 40px; flex-wrap: wrap; }
.hero-stats div strong { display: block; font-size: 1.7rem; font-family: var(--font-heading); color: var(--c-primary-dark); }
.hero-stats div span { font-size: 0.85rem; color: var(--c-text-muted); }

.hero-3d {
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.15s ease-out;
  will-change: transform;
}
.hero-3d-card {
  position: relative;
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 34px;
  border: 1px solid var(--c-border);
  transform-style: preserve-3d;
}
.hero-3d-card .layer-2 { transform: translateZ(30px); }
.hero-3d-card .layer-1 { transform: translateZ(10px); }
.hero-3d-card .layer-3 { transform: translateZ(46px); }

.gauge-wrap { position: relative; width: 220px; height: 220px; margin: 0 auto; }
.gauge-wrap svg { transform: rotate(-90deg); }
.gauge-track { fill: none; stroke: var(--c-bg-alt); stroke-width: 14; }
.gauge-value { fill: none; stroke: url(#gaugeGradient); stroke-width: 14; stroke-linecap: round; transition: stroke-dasharray 0.8s cubic-bezier(.2,.9,.25,1); }
.gauge-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.gauge-center strong { font-size: 2.1rem; font-family: var(--font-heading); }
.gauge-center span { color: var(--c-text-muted); font-size: 0.8rem; text-align: center; padding: 0 20px; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-3d { order: -1; max-width: 380px; margin: 0 auto; }
}

/* ---------- Sections ---------- */
.section { padding: 70px 0; }
.section-alt { background: var(--c-bg-alt); }
.section-head { max-width: 700px; margin: 0 auto 44px; text-align: center; }
.section-head p { font-size: 1.05rem; }

.grid {
  display: grid;
  gap: 26px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 980px) { .grid-4 { grid-template-columns: repeat(2, 1fr); } .grid-3 { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 640px) { .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; } }

/* ---------- Cards (tilt) ---------- */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease, transform 0.1s ease-out;
  transform-style: preserve-3d;
  will-change: transform;
}
.card:hover { box-shadow: var(--shadow-md); }
.card-icon {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: var(--gradient-brand);
  color: #fff;
  margin-bottom: 18px;
  transform: translateZ(18px);
}
.card-icon svg { width: 26px; height: 26px; }
.card h3 { margin-bottom: 8px; }
.card p { margin-bottom: 14px; }
.card-link { font-weight: 700; color: var(--c-primary-dark); display: inline-flex; align-items: center; gap: 6px; }
.card-link svg { width: 16px; height: 16px; transition: transform 0.2s ease; }
.card:hover .card-link svg { transform: translateX(4px); }

.card-flat { box-shadow: none; }

.tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--c-bg-alt);
  color: var(--c-primary-dark);
  margin-bottom: 10px;
}

/* ---------- Article ---------- */
.article-hero { padding: 50px 0 20px; }
.article-meta { display: flex; gap: 16px; flex-wrap: wrap; color: var(--c-text-muted); font-size: 0.88rem; margin-bottom: 22px; }
.article-body { max-width: 760px; margin: 0 auto; padding: 10px 0 60px; }
.article-body h2 { margin-top: 1.6em; }
.article-body h3 { margin-top: 1.3em; }
.article-body p, .article-body li { font-size: 1.02rem; }
.article-body blockquote {
  margin: 28px 0;
  padding: 18px 24px;
  border-left: 4px solid var(--c-primary);
  background: var(--c-bg-alt);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
}
.callout {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-left: 5px solid var(--c-accent);
  padding: 20px 24px;
  border-radius: var(--radius-sm);
  margin: 26px 0;
}
.callout strong { color: var(--c-text); }
.source-note { font-size: 0.82rem; color: var(--c-text-muted); border-top: 1px solid var(--c-border); padding-top: 14px; margin-top: 40px; }

.toc {
  background: var(--c-bg-alt);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin: 20px 0 30px;
}
.toc strong { display: block; margin-bottom: 10px; }
.toc ol { margin: 0; padding-left: 1.2em; }
.toc a { color: var(--c-primary-dark); font-weight: 600; }

/* ---------- Tabs (calculators) ---------- */
.tabs-shell {
  background: var(--c-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.tabs-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 14px;
  background: var(--c-bg-alt);
  border-bottom: 1px solid var(--c-border);
}
.tab-btn {
  padding: 11px 18px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--c-text-muted);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
  font-family: var(--font-body);
}
.tab-btn:hover { background: var(--c-surface); }
.tab-btn.is-active { background: var(--gradient-brand); color: #fff; box-shadow: var(--shadow-sm); }
.tab-panels { padding: 36px; }
.tab-panel { display: none; }
.tab-panel.is-active { display: block; animation: fade-in 0.35s ease; }

@keyframes fade-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- Forms / Calculators ---------- */
.calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: start; }
@media (max-width: 800px) {
  .calc-grid { grid-template-columns: 1fr; }
  .result-box { position: static; top: auto; }
}

.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 700; margin-bottom: 6px; font-size: 0.92rem; }
.field .hint { color: var(--c-text-muted); font-size: 0.8rem; margin-top: 5px; }
.field input[type="number"],
.field input[type="text"],
.field input[type="email"],
.field select,
.field textarea {
  width: 100%;
  padding: 13px 15px;
  border-radius: 12px;
  border: 1.5px solid var(--c-border);
  background: var(--c-bg);
  color: var(--c-text);
  font-size: 1rem;
  font-family: var(--font-body);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 4px rgba(22, 163, 74, 0.15);
}
.field textarea { resize: vertical; min-height: 130px; }

.radio-row, .unit-toggle { display: flex; gap: 10px; flex-wrap: wrap; }
.unit-toggle button {
  flex: 1;
  padding: 10px;
  border-radius: 10px;
  border: 1.5px solid var(--c-border);
  background: var(--c-bg);
  color: var(--c-text-muted);
  font-weight: 700;
  cursor: pointer;
}
.unit-toggle button.is-active { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }

.result-box {
  background: linear-gradient(160deg, var(--c-surface), var(--c-bg-alt));
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  position: sticky;
  top: calc(var(--header-h) + 20px);
}
.result-value { font-family: var(--font-heading); font-size: 3rem; font-weight: 800; color: var(--c-primary-dark); }
.result-label { font-weight: 700; margin-top: 4px; }
.result-desc { font-size: 0.9rem; margin-top: 10px; }

.badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.82rem;
  margin-top: 12px;
}
.badge-under { background: #dbeafe; color: #1d4ed8; }
.badge-normal { background: #dcfce7; color: #15803d; }
.badge-over { background: #fef3c7; color: #b45309; }
.badge-obese { background: #fee2e2; color: #b91c1c; }

.bmi-scale { display: flex; height: 14px; border-radius: 999px; overflow: hidden; margin: 22px 0 8px; }
.bmi-scale span { flex: 1; }
.bmi-scale .s1 { background: #60a5fa; }
.bmi-scale .s2 { background: #22c55e; }
.bmi-scale .s3 { background: #f59e0b; }
.bmi-scale .s4 { background: #ef4444; }
.bmi-scale-labels { display: flex; justify-content: space-between; font-size: 0.72rem; color: var(--c-text-muted); }

.table-wrap { overflow-x: auto; margin: 24px 0; border-radius: var(--radius-sm); border: 1px solid var(--c-border); }
table { width: 100%; border-collapse: collapse; min-width: 480px; }
th, td { text-align: left; padding: 13px 16px; border-bottom: 1px solid var(--c-border); font-size: 0.92rem; }
th { background: var(--c-bg-alt); font-family: var(--font-heading); }
tr:last-child td { border-bottom: none; }

.disclaimer {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  background: var(--c-bg-alt);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-top: 20px;
}

/* ---------- Stats / charts ---------- */
.chart-card { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius-md); padding: 26px; box-shadow: var(--shadow-sm); }
.bar-row { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.bar-row .label { width: 150px; font-size: 0.85rem; font-weight: 600; flex-shrink: 0; }
.bar-track { flex: 1; height: 16px; background: var(--c-bg-alt); border-radius: 999px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 999px; background: var(--gradient-brand); width: 0; transition: width 1.1s cubic-bezier(.2,.8,.2,1); }
.bar-row .val { width: 55px; text-align: right; font-weight: 700; font-size: 0.85rem; }

.donut-wrap { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; justify-content: center; }
.donut-legend { display: flex; flex-direction: column; gap: 10px; }
.donut-legend li { list-style: none; display: flex; align-items: center; gap: 10px; font-size: 0.88rem; }
.dot { width: 12px; height: 12px; border-radius: 4px; flex-shrink: 0; }

/* ---------- Publications ---------- */
.pub-item {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-bottom: 18px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: start;
}
.pub-year {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--c-primary-dark);
  background: var(--c-bg-alt);
  border-radius: 14px;
  padding: 10px 16px;
  text-align: center;
  min-width: 70px;
}
.pub-item h3 { margin-bottom: 4px; }
.pub-authors { font-size: 0.86rem; color: var(--c-text-muted); margin-bottom: 8px; }
@media (max-width: 560px) { .pub-item { grid-template-columns: 1fr; } .pub-year { width: fit-content; } }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-info-item { display: flex; gap: 16px; margin-bottom: 24px; align-items: flex-start; }
.contact-info-item .ico {
  width: 46px; height: 46px; border-radius: 14px; background: var(--gradient-brand);
  color: #fff; display: grid; place-items: center; flex-shrink: 0;
}
.form-status { display: none; padding: 14px 18px; border-radius: 12px; margin-top: 16px; font-weight: 600; font-size: 0.9rem; }
.form-status.is-visible { display: block; }
.form-status.ok { background: #dcfce7; color: #15803d; }
.form-status.err { background: #fee2e2; color: #b91c1c; }

/* ---------- Accordion (FAQ) ---------- */
.faq-item { border: 1px solid var(--c-border); border-radius: var(--radius-sm); margin-bottom: 12px; overflow: hidden; background: var(--c-surface); }
.faq-q {
  width: 100%;
  text-align: left;
  padding: 18px 22px;
  background: none;
  border: none;
  font-weight: 700;
  font-family: var(--font-body);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--c-text);
}
.faq-q .plus { transition: transform 0.25s ease; font-size: 1.3rem; color: var(--c-primary); }
.faq-item.is-open .plus { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; padding: 0 22px; }
.faq-item.is-open .faq-a { max-height: 400px; padding-bottom: 20px; }

/* ---------- Footer ---------- */
.site-footer { background: #0f1f13; color: #cddcd0; padding: 60px 0 26px; margin-top: 60px; }
:root[data-theme="dark"] .site-footer, body:not([data-force-light]) .site-footer { background: #081109; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
@media (max-width: 780px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.site-footer a { color: #a6c2ac; font-size: 0.92rem; }
.site-footer a:hover { color: #fff; }
.footer-links { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.82rem;
  color: #7d9a85;
}
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; color: #fff; font-weight: 800; font-family: var(--font-heading); }
.footer-brand .brand-mark { width: 36px; height: 36px; }
.contact-link-btn { background: none; border: none; padding: 0; cursor: pointer; font: inherit; color: #a6c2ac; text-decoration: underline; }
.contact-link-btn:hover { color: #fff; }

/* ---------- Misc / utility ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

.breadcrumbs { font-size: 0.82rem; color: var(--c-text-muted); margin-bottom: 18px; }
.breadcrumbs a { color: var(--c-text-muted); }
.breadcrumbs a:hover { color: var(--c-primary); }

.page-hero {
  padding: 46px 0 10px;
  text-align: center;
}
.page-hero p { max-width: 640px; margin: 0 auto; }

.pill-list { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 22px; }
.pill-list a {
  padding: 9px 16px;
  border-radius: 999px;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  font-size: 0.85rem;
  font-weight: 600;
}
.pill-list a:hover { border-color: var(--c-primary); color: var(--c-primary-dark); }

.legal h2 { margin-top: 1.8em; }
.legal { max-width: 800px; margin: 0 auto; }

/* ---------- Macro donut segments (calorie calculator) ---------- */
.macro-donut-wrap { position: relative; width: 200px; height: 200px; margin: 0 auto; }
.macro-donut-wrap svg { transform: rotate(-90deg); }
.macro-donut-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.macro-donut-center strong { font-size: 1.5rem; font-family: var(--font-heading); }
.macro-donut-center span { color: var(--c-text-muted); font-size: 0.75rem; }
.macro-legend { display: flex; flex-direction: column; gap: 12px; justify-content: center; }
.macro-legend li { list-style: none; display: flex; align-items: center; gap: 10px; font-size: 0.92rem; font-weight: 600; }
.macro-legend .val { margin-left: auto; color: var(--c-text-muted); font-weight: 700; }

/* ---------- Flip cards (3D) ---------- */
.flip-card { perspective: 1200px; height: 200px; }
.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.6s cubic-bezier(.4,.2,.2,1);
  transform-style: preserve-3d;
}
.flip-card:hover .flip-card-inner, .flip-card:focus-within .flip-card-inner { transform: rotateY(180deg); }
.flip-card-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid var(--c-border);
}
.flip-card-front { background: var(--c-surface); }
.flip-card-back { background: var(--gradient-brand); color: #fff; transform: rotateY(180deg); }
.flip-card-back p { color: rgba(255,255,255,0.92); margin: 0; font-size: 0.9rem; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

/* ---------- GEO: blok "W skrócie" (dodane 2026-08-01) ---------------------
   Odpowiedź podana wprost, na samej górze strony — to ten fragment cytują
   wyszukiwarki generatywne. Styl korzysta ze zmiennych motywu tej witryny,
   więc działa w wersji jasnej i ciemnej bez osobnych reguł.                */
.geo-tldr {
  margin: 26px 0 30px;
  padding: 20px 24px;
  background: var(--c-surface, #fff);
  border: 1px solid var(--c-border, #e5e7eb);
  border-left: 5px solid var(--c-primary, #2563eb);
  border-radius: 12px;
}
.geo-tldr-head {
  margin: 0 0 8px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-primary, #2563eb);
}
.geo-tldr-answer {
  margin: 0 0 12px;
  font-size: 1.06rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-text, #111827);
}
.geo-tldr-list { margin: 0; padding-left: 20px; }
.geo-tldr-list li {
  margin: 5px 0;
  font-size: 0.96rem;
  line-height: 1.55;
  color: var(--c-text-muted, #4b5563);
}
@media (max-width: 640px) {
  .geo-tldr { padding: 16px 18px; }
  .geo-tldr-answer { font-size: 1rem; }
}

/* ---------- Komponenty autopilota tresci (ac-*) --------------------------
   Uzywane przez podstrony dokladane automatycznie co dwa dni. Kolory,
   typografia i zaokraglenia biora sie ze zmiennych motywu tej witryny,
   wiec komponent wyglada u siebie w kazdym z pieciu serwisow.            */
/* Szerokosc i wysrodkowanie ustawiamy tutaj, a nie liczymy na klase kontenera
   witryny: czesc serwisow uzywa `.container`, czesc `.wrap`, a cwiczwdomu.pl
   nie ma zadnej z nich. Komponent musi wygladac poprawnie wszedzie. */
.ac-page { max-width: 860px; margin-left: auto; margin-right: auto;
           padding: 26px 20px 56px; }
.ac-crumbs { font-size: .86rem; color: var(--c-text-muted, #64748b); margin: 0 0 18px; }
.ac-crumbs a { color: inherit; }
.ac-kicker {
  display: inline-block; padding: 5px 12px; border-radius: 999px;
  background: var(--c-primary, #2563eb); color: #fff;
  font-size: .74rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase;
}
.ac-page h1 { margin: 14px 0 10px; line-height: 1.18; }
.ac-meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: .86rem;
           color: var(--c-text-muted, #64748b); margin-bottom: 6px; }
.ac-toc { margin: 26px 0; padding: 18px 22px; border: 1px solid var(--c-border, #e5e7eb);
          border-radius: 12px; background: var(--c-surface, #fff); }
.ac-toc strong { display: block; margin-bottom: 8px; font-size: .82rem;
                 letter-spacing: .08em; text-transform: uppercase; color: var(--c-text-muted, #64748b); }
.ac-toc ol { margin: 0; padding-left: 20px; }
.ac-toc li { margin: 4px 0; }
.ac-page h2 { margin: 34px 0 12px; line-height: 1.28; }
.ac-page p, .ac-page li { line-height: 1.72; }
.ac-note { margin: 22px 0; padding: 16px 20px; border-radius: 12px;
           background: var(--c-surface, #fff); border: 1px solid var(--c-border, #e5e7eb);
           border-left: 5px solid var(--c-primary, #2563eb); }
.ac-faq { margin: 10px 0; border: 1px solid var(--c-border, #e5e7eb); border-radius: 12px;
          background: var(--c-surface, #fff); overflow: hidden; }
.ac-faq > summary { cursor: pointer; padding: 15px 20px; font-weight: 600;
                    list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.ac-faq > summary::-webkit-details-marker { display: none; }
.ac-faq > summary::after { content: "+"; font-weight: 700; color: var(--c-primary, #2563eb); }
.ac-faq[open] > summary::after { content: "\2013"; }
.ac-faq > div { padding: 0 20px 16px; color: var(--c-text-muted, #4b5563); }
.ac-src { margin-top: 30px; font-size: .84rem; color: var(--c-text-muted, #64748b); }

/* kalkulator */
.ac-calc { margin: 26px 0; padding: 22px; border-radius: 14px;
           border: 1px solid var(--c-border, #e5e7eb); background: var(--c-surface, #fff); }
.ac-field { margin-bottom: 14px; }
.ac-field label { display: block; margin-bottom: 5px; font-size: .88rem; font-weight: 600; }
.ac-field input, .ac-field select {
  width: 100%; padding: 11px 13px; font-size: 1rem; font: inherit;
  border: 1px solid var(--c-border, #cbd5e1); border-radius: 10px;
  background: var(--c-surface, #fff); color: var(--c-text, #111827);
}
.ac-btn { width: 100%; padding: 13px 18px; border: 0; border-radius: 10px; cursor: pointer;
          background: var(--c-primary, #2563eb); color: #fff; font-size: 1rem; font-weight: 700; }
.ac-out { margin-top: 18px; padding: 18px; border-radius: 12px;
          background: var(--c-surface, #fff); border: 1px dashed var(--c-border, #cbd5e1); }
.ac-out-main { font-size: 1.9rem; font-weight: 800; color: var(--c-primary, #2563eb); line-height: 1.2; }
.ac-out-label { font-size: .8rem; letter-spacing: .07em; text-transform: uppercase;
                color: var(--c-text-muted, #64748b); }
.ac-row { display: flex; justify-content: space-between; gap: 14px; padding: 8px 0;
          border-top: 1px solid var(--c-border, #e5e7eb); font-size: .95rem; }
.ac-row b { font-variant-numeric: tabular-nums; }
@media (max-width: 640px) { .ac-calc { padding: 16px; } .ac-out-main { font-size: 1.5rem; } }