/* styles.css - ML Convertisseur unified design system
   Supports homepage, conversion templates, and hub pages.
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=Outfit:wght@600;700;800;900&display=swap');

:root {
  --color-bg: #f7faff;
  --color-bg-soft: #eef5ff;
  --color-card-bg: #ffffff;
  --color-text-main: #0f172a;
  --color-text-muted: #526173;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-soft: #eaf1ff;
  --color-primary-border: #bfdbfe;
  --color-border: #dbe5f2;
  --color-border-strong: #b8c8df;
  --color-input-bg: #ffffff;
  --color-focus: rgba(37, 99, 235, 0.16);
  --color-success: #059669;
  --color-success-bg: #ecfdf5;
  --color-success-border: #bbf7d0;
  --color-warning: #d97706;
  --color-warning-bg: #fff7ed;
  --color-warning-border: #fed7aa;
  --color-danger: #e11d48;
  --color-danger-bg: #fff1f2;
  --color-danger-border: #fecdd3;
  --color-footer: #0f172a;

  --font-heading: 'Outfit', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 3px 10px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 12px 32px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 24px 70px rgba(37, 99, 235, 0.13);

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2.5rem;
  --spacing-xl: 4rem;

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-card: 22px;
  --radius-pill: 999px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background:
    radial-gradient(circle at 12% 0%, rgba(37, 99, 235, 0.08), transparent 28rem),
    radial-gradient(circle at 90% 8%, rgba(14, 165, 233, 0.08), transparent 26rem),
    var(--color-bg);
  color: var(--color-text-main);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
img, svg { max-width: 100%; }

h1, h2, h3, h4 {
  color: var(--color-text-main);
  font-family: var(--font-heading);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.12;
}
h1 { font-size: clamp(2.15rem, 7vw, 4.55rem); max-width: 1000px; margin-inline: auto; }
h2 { font-size: clamp(1.55rem, 4vw, 2.25rem); }
h3 { font-size: 1.18rem; }
p { color: var(--color-text-muted); }
strong { color: var(--color-text-main); }

.container { width: min(100% - 2rem, 1180px); margin-inline: auto; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-muted, .muted-small { color: var(--color-text-muted); }
.muted-small { font-size: 0.93rem; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 9999;
  padding: 0.75rem 1rem;
  color: #ffffff;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  transition: top 0.2s;
}
.skip-link:focus { top: 1rem; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(219, 229, 242, 0.9);
  backdrop-filter: blur(18px);
}
.header-container { display: flex; align-items: center; justify-content: space-between; min-height: 74px; }
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--color-text-main);
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: -0.03em;
}
.logo:hover { color: var(--color-text-main); }
.logo-mark,
.logo > span:first-child:not(.logo-text):not(.toast-icon) {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  color: #ffffff;
  background: linear-gradient(135deg, var(--color-primary), #0ea5e9);
  border-radius: 0.85rem;
  font-size: 0.95rem;
  text-transform: lowercase;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.22);
}
.logo-text { letter-spacing: -0.02em; }
.nav-links { display: flex; align-items: center; gap: 0.35rem; list-style: none; }
.nav-links a {
  display: inline-flex;
  align-items: center;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  font-size: 0.94rem;
  font-weight: 800;
  transition: background 0.18s, color 0.18s;
}
.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a.active { color: var(--color-primary); background: var(--color-primary-soft); }
.mobile-menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  background: #ffffff;
  border-radius: 12px;
}
.mobile-menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: var(--color-text-main);
  border-radius: 99px;
  transition: transform 0.2s, opacity 0.2s;
}
.mobile-menu-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.mobile-menu-toggle.is-open span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Hero + breadcrumbs */
.breadcrumb-section { display: flex; justify-content: center; padding: 1.15rem 0 0.75rem; }
.breadcrumbs { display: flex; align-items: center; flex-wrap: wrap; gap: 0.45rem; list-style: none; color: var(--color-text-muted); font-size: 0.9rem; }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: 0.45rem; color: #94a3b8; }
.breadcrumbs a { color: var(--color-text-muted); }
.breadcrumbs a:hover { color: var(--color-primary); }
.hero {
  padding: 0 0 var(--spacing-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(247, 250, 255, 0.15)),
    radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.1), transparent 36rem);
}
.hero-copy { text-align: center; padding-bottom: var(--spacing-lg); }
.hero-subtitle,
.page-intro {
  max-width: 780px;
  margin: 1rem auto 0;
  color: var(--color-text-muted);
  font-size: clamp(1rem, 2.35vw, 1.18rem);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--color-primary);
  font-size: 0.83rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}
.hero-badges,
.answer-badge-row { display: flex; justify-content: center; flex-wrap: wrap; gap: 0.65rem; margin-top: 1.35rem; }
.hero-badges span,
.badge,
.mini-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 32px;
  padding: 0.42rem 0.76rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: #ffffff;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  font-weight: 900;
  line-height: 1.15;
  white-space: nowrap;
  box-shadow: var(--shadow-xs);
}
.mini-badge strong { color: var(--color-primary); }
.badge-success { background: var(--color-success-bg); color: var(--color-success); border-color: var(--color-success-border); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); border-color: var(--color-warning-border); }

/* Base cards */
.card, .tool-card, .table-card, .mini-card, .step-card, .summary-tile, .usecase-card, .method-card, .mistake-card, .ingredient-answer-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
}
.card, .tool-card { padding: clamp(1.15rem, 3vw, 1.75rem); }
.card-title { margin-bottom: var(--spacing-sm); font-size: clamp(1.25rem, 3vw, 1.72rem); }
.section-heading { margin-bottom: 1.25rem; }
.section-heading p:not(.eyebrow) { max-width: 740px; margin-top: 0.55rem; }
.section-lead { max-width: 800px; margin-bottom: 1rem; color: var(--color-text-muted); font-size: 1rem; }
.section-stack { display: grid; gap: var(--spacing-lg); margin-top: calc(var(--spacing-xl) * -0.35); }

/* Tools */
.converters-grid { display: grid; grid-template-columns: 1fr; gap: 1.25rem; align-items: start; }
@media (min-width: 920px) { .converters-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.tool-card { position: relative; overflow: hidden; }
.tool-card::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 4px; background: linear-gradient(90deg, var(--color-primary), #0ea5e9); }
.tool-card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: 0.85rem; }
.tool-kicker { color: var(--color-primary); font-size: 0.78rem; font-weight: 900; letter-spacing: 0.07em; margin-bottom: 0.22rem; text-transform: uppercase; }
.tool-card h2 { font-size: clamp(1.35rem, 2.5vw, 1.8rem); }
.tool-description { margin-bottom: 1.15rem; font-size: 0.97rem; }
.fields-stack { display: flex; flex-direction: column; }
.fields-stack.is-swapped { flex-direction: column-reverse; }
.form-group { margin-bottom: 1rem; }
.form-label { display: block; margin-bottom: 0.45rem; color: var(--color-text-main); font-size: 0.92rem; font-weight: 900; }
.input-container { display: flex; align-items: stretch; }
.input-field {
  width: 100%; min-width: 0; padding: 0.88rem 1rem;
  border: 1.5px solid var(--color-border); border-radius: var(--radius-md);
  background: var(--color-input-bg); color: var(--color-text-main);
  font-size: 1rem; font-weight: 700; outline: none;
  transition: border-color 0.18s, box-shadow 0.18s, background-color 0.18s;
}
.input-container .input-field { border-radius: var(--radius-md) 0 0 var(--radius-md); }
.input-field:focus { border-color: var(--color-primary); box-shadow: 0 0 0 4px var(--color-focus); }
.input-unit {
  display: grid; place-items: center; min-width: 4rem; padding: 0 0.85rem;
  background: var(--color-bg-soft); border: 1.5px solid var(--color-border); border-left: 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-muted); font-weight: 900;
}
select.input-field { appearance: auto; cursor: pointer; }
.swap-container { display: flex; justify-content: center; margin: 0.25rem 0 0.95rem; }
.btn-swap {
  display: grid; place-items: center; width: 42px; height: 42px;
  border: 1px solid var(--color-border); border-radius: 50%; background: #ffffff;
  color: var(--color-primary); font-size: 1.1rem; font-weight: 900;
  box-shadow: var(--shadow-sm); transition: transform 0.2s, border-color 0.2s, background-color 0.2s;
}
.btn-swap:hover { border-color: var(--color-primary); background: var(--color-primary-soft); transform: rotate(180deg); }
.custom-density-section { padding: 1rem; margin: 0.25rem 0 1rem; background: var(--color-bg-soft); border: 1px dashed var(--color-border-strong); border-radius: var(--radius-md); }

/* Buttons + results */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.45rem;
  min-height: 44px; padding: 0.78rem 1rem;
  border: 0; border-radius: var(--radius-md);
  font-weight: 900; line-height: 1; transition: transform 0.18s, background-color 0.18s, border-color 0.18s, color 0.18s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { color: #ffffff; background: var(--color-primary); box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2); }
.btn-primary:hover { color: #ffffff; background: var(--color-primary-hover); }
.btn-secondary { color: var(--color-primary); background: var(--color-primary-soft); border: 1px solid rgba(37, 99, 235, 0.14); }
.btn-secondary:hover { color: #ffffff; background: var(--color-primary); }
.result-container {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md);
  margin-top: 1rem; background: linear-gradient(135deg, #eff6ff, #ffffff);
}
.result-container-primary { background: linear-gradient(135deg, #eff6ff, #ffffff); border-color: var(--color-primary-border); }
.result-container-warning { background: linear-gradient(135deg, #fff7ed, #ffffff); border-color: var(--color-warning-border); }
.result-label { display: block; margin-bottom: 0.2rem; color: var(--color-text-muted); font-size: 0.78rem; font-weight: 900; letter-spacing: 0.06em; text-transform: uppercase; }
.result-text { min-width: 0; color: var(--color-text-muted); font-weight: 800; }
.result-value { color: var(--color-primary); font-family: var(--font-heading); font-size: clamp(1.15rem, 3vw, 1.55rem); font-weight: 900; line-height: 1.2; }
.rule-text { padding-top: 0.85rem; margin-top: 0.9rem; border-top: 1px solid var(--color-border); color: var(--color-text-muted); font-size: 0.9rem; text-align: center; }
.rule-text strong, .rule-text span { color: var(--color-primary); font-weight: 900; }

/* Homepage section grids */
.popular-grid { display: grid; gap: 1.25rem; }
@media (min-width: 820px) { .popular-grid { grid-template-columns: 1fr 1fr; } }
.popular-group { padding: 1rem; background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.popular-group h3 { margin-bottom: 0.8rem; font-size: 1.05rem; }
.popular-conversions { display: flex; flex-wrap: wrap; gap: 0.65rem; }
.popular-btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 38px;
  padding: 0.55rem 0.85rem; color: var(--color-text-main); background: #ffffff;
  border: 1px solid var(--color-border); border-radius: var(--radius-pill);
  font-size: 0.9rem; font-weight: 900; box-shadow: var(--shadow-xs);
  transition: transform 0.18s, border-color 0.18s, color 0.18s, background-color 0.18s;
}
.popular-btn:hover { color: var(--color-primary); background: var(--color-primary-soft); border-color: rgba(37, 99, 235, 0.26); transform: translateY(-1px); }
.categories-grid, .steps-grid, .use-grid, .usecase-grid, .method-grid, .mistakes-grid, .quick-summary-grid, .related-grid, .two-col-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; }
@media (min-width: 760px) {
  .categories-grid, .steps-grid, .use-grid, .usecase-grid, .method-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .quick-summary-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .related-grid, .mistakes-grid, .two-col-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.category-card { display: flex; flex-direction: column; gap: 0.75rem; }
.category-card p { margin: 0; }
.category-card .btn { margin-top: auto; }
.category-icon { display: grid; place-items: center; width: 42px; height: 42px; color: #ffffff; background: linear-gradient(135deg, var(--color-primary), #0ea5e9); border-radius: 14px; font-family: var(--font-heading); font-size: 1.3rem; font-weight: 900; }
.formula { width: fit-content; padding: 0.42rem 0.65rem; color: var(--color-primary); background: var(--color-primary-soft); border-radius: 10px; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 0.92rem; font-weight: 900; }
.example { color: var(--color-text-muted); font-size: 0.92rem; font-style: italic; }

/* Tables */
.tables-grid { display: grid; gap: 1.2rem; }
.table-card { padding: 1.1rem; overflow: hidden; }
.table-card h3 { margin-bottom: 0.35rem; }
.table-card p { margin-bottom: 0.8rem; font-size: 0.95rem; }
.table-responsive { width: 100%; overflow-x: auto; border: 1px solid var(--color-border); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); background: #ffffff; }
.utility-table { width: 100%; min-width: 520px; border-collapse: collapse; background: #ffffff; font-size: 0.92rem; }
.wide-table { min-width: 820px; }
.utility-table th { padding: 0.88rem 1rem; color: #ffffff; background: var(--color-text-main); font-family: var(--font-heading); font-weight: 900; text-align: left; white-space: nowrap; }
.utility-table td { padding: 0.82rem 1rem; border-bottom: 1px solid var(--color-border); color: var(--color-text-main); white-space: nowrap; }
.utility-table tr:nth-child(even) td { background: #f8fafc; }
.utility-table tr:last-child td { border-bottom: 0; }
.highlight-row td { background: #eff6ff !important; color: var(--color-primary) !important; font-weight: 900; }
.table-note { margin-top: 0.85rem; color: var(--color-text-muted); font-size: 0.92rem; }

/* FAQ */
.faq-list { display: grid; gap: 0.75rem; }
.faq-item { overflow: hidden; background: #ffffff; border: 1px solid var(--color-border); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.faq-question { display: flex; align-items: center; justify-content: space-between; width: 100%; padding: 1rem 1.1rem; border: 0; background: transparent; color: var(--color-text-main); font-family: var(--font-heading); font-size: 1.02rem; font-weight: 900; text-align: left; }
.faq-question:hover, .faq-question:focus-visible { background: var(--color-bg-soft); }
.faq-question::after { content: "+"; flex: 0 0 auto; margin-left: 1rem; color: var(--color-primary); font-size: 1.5rem; line-height: 1; transition: transform 0.2s; }
.faq-question.active::after { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.22s ease; }
.faq-answer p { padding: 0 1.1rem 1rem; }

/* Conversion and hub page shared layout */
.conversion-page .hero, .page-template-template-hub-ml-en-cl .hero, .page-template-template-hub-cl-en-ml .hero, .page-template-template-hub-ml-en-g .hero { padding: 0 0 2.1rem; }
.conversion-page h1 { font-size: clamp(2.2rem, 7vw, 3.55rem); }
.conversion-page main.container { width: min(100% - 2rem, 980px); }
main.container > section:not(:last-child), main.container > div:not(:last-child) { margin-bottom: var(--spacing-lg); }
main.container section { scroll-margin-top: 90px; }
main.container h2 { padding-bottom: 0.75rem; margin-bottom: 1rem; border-bottom: 1px solid var(--color-border); }
main.container h3 { margin-bottom: 0.55rem; }
.converter-card-single { max-width: 700px; margin-inline: auto; }
.immediate-answer-card {
  position: relative; overflow: hidden; padding: clamp(1.35rem, 4vw, 2rem);
  border: 2px solid rgba(37, 99, 235, 0.55); border-radius: var(--radius-card);
  background: radial-gradient(circle at top right, rgba(37, 99, 235, 0.10), transparent 18rem), linear-gradient(135deg, #ffffff, #f7faff);
  box-shadow: var(--shadow-lg); text-align: center;
}
.immediate-answer-card::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 5px; background: linear-gradient(90deg, var(--color-primary), #0ea5e9); }
.immediate-answer-title { margin-bottom: 0.5rem; color: var(--color-text-muted); font-size: 0.82rem; font-weight: 900; letter-spacing: 0.08em; text-transform: uppercase; }
.immediate-answer-value { color: var(--color-text-main); font-family: var(--font-heading); font-size: clamp(2rem, 6vw, 3.15rem); font-weight: 900; letter-spacing: -0.04em; line-height: 1.05; }
.summary-tile, .usecase-card, .method-card, .mistake-card, .mini-card, .step-card { height: 100%; padding: 1rem; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.summary-tile { background: linear-gradient(135deg, #ffffff, #f8fbff); }
.summary-label { margin-bottom: 0.35rem; color: var(--color-text-muted); font-size: 0.78rem; font-weight: 900; letter-spacing: 0.06em; text-transform: uppercase; }
.summary-value { color: var(--color-text-main); font-family: var(--font-heading); font-size: clamp(1.05rem, 3vw, 1.35rem); font-weight: 900; line-height: 1.15; }
.formula-panel { display: grid; gap: 1rem; padding: clamp(1rem, 3vw, 1.35rem); margin-top: 1rem; border: 1px solid var(--color-primary-border); border-left: 5px solid var(--color-primary); border-radius: var(--radius-card); background: linear-gradient(135deg, #eff6ff, #ffffff); }
@media (min-width: 780px) { .formula-panel { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.formula-panel code { display: inline-block; padding: 0.42rem 0.65rem; border: 1px solid var(--color-border); border-radius: 10px; background: #ffffff; color: var(--color-primary); font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 0.98rem; font-weight: 900; }
.step-list { display: grid; gap: 0.7rem; margin-top: 1rem; list-style: none; }
.step-list li { padding: 0.85rem 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-bg); color: var(--color-text-muted); }
.step-list strong { color: var(--color-text-main); }
.note-strip { padding: 1rem; border: 1px solid var(--color-border); border-left: 5px solid var(--color-primary); border-radius: var(--radius-md); background: #f8fbff; color: var(--color-text-muted); }
.note-strip strong { color: var(--color-text-main); }
.info-block { display: grid; grid-template-columns: auto 1fr; gap: 1rem; align-items: start; padding: 1.35rem; background: #ffffff; border: 1px solid var(--color-border); border-left: 5px solid var(--color-primary); border-radius: var(--radius-card); box-shadow: var(--shadow-md); }
.info-icon { display: grid; place-items: center; width: 36px; height: 36px; margin-top: 0.15rem; color: #ffffff; background: var(--color-primary); border-radius: 50%; font-family: var(--font-heading); font-weight: 900; }
.advice-block { padding: clamp(1.15rem, 3vw, 1.65rem); border: 1px solid var(--color-success-border); border-left: 5px solid var(--color-success); border-radius: var(--radius-card); background: linear-gradient(135deg, #f0fdf4, #ffffff); box-shadow: var(--shadow-md); }
.advice-block h2 { border-bottom-color: var(--color-success-border); }
.mistake-card strong { display: block; margin-bottom: 0.4rem; color: var(--color-text-main); font-family: var(--font-heading); font-size: 1.03rem; font-weight: 900; }

/* ml -> g specific */
.density-note-card { border-color: var(--color-warning-border); border-left: 5px solid var(--color-warning); background: linear-gradient(135deg, #fff7ed, #ffffff); }
.density-note-card h2 { border-bottom-color: var(--color-warning-border); }
.ingredient-answer-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.85rem; margin-top: 1rem; }
@media (min-width: 760px) { .ingredient-answer-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.ingredient-answer-card { padding: 1rem; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.ingredient-answer-card.exact { border-color: var(--color-success-border); background: #f0fdf4; }
.ingredient-answer-card.estimate { border-color: var(--color-warning-border); background: #fffaf3; }
.ingredient-answer-name { color: var(--color-text-muted); font-size: 0.84rem; font-weight: 900; text-transform: uppercase; letter-spacing: 0.04em; }
.ingredient-answer-value { margin-top: 0.25rem; color: var(--color-text-main); font-family: var(--font-heading); font-size: clamp(1.2rem, 4vw, 1.55rem); font-weight: 900; line-height: 1.15; }
.ingredient-answer-density { margin-top: 0.45rem; color: var(--color-text-muted); font-size: 0.84rem; }
.calculator-mini-note { margin-top: 0.75rem; padding: 0.85rem; border: 1px dashed var(--color-border-strong); border-radius: var(--radius-md); background: var(--color-bg); color: var(--color-text-muted); font-size: 0.92rem; }
.density-pill { display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.32rem 0.58rem; border-radius: var(--radius-pill); background: var(--color-warning-bg); color: #b45309; font-size: 0.78rem; font-weight: 900; }
.accuracy-list { display: grid; gap: 0.7rem; list-style: none; margin-top: 1rem; }
.accuracy-list li { padding: 0.85rem 1rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: #ffffff; color: var(--color-text-muted); }
.accuracy-list strong { color: var(--color-text-main); }

/* Footer */
.site-footer { margin-top: var(--spacing-xl); padding: var(--spacing-lg) 0 var(--spacing-md); color: #cbd5e1; background: var(--color-footer); border-top: 4px solid var(--color-primary); }
.footer-grid { display: grid; gap: 2rem; }
@media (min-width: 820px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr; } }
.footer-logo, .footer-brand h3 { display: inline-flex; margin-bottom: 0.7rem; color: #ffffff; font-family: var(--font-heading); font-size: 1.45rem; font-weight: 900; }
.footer-logo:hover { color: #ffffff; }
.footer-brand p { max-width: 520px; color: #94a3b8; }
.footer-links-title { margin-bottom: 0.75rem; color: #ffffff; font-family: var(--font-heading); font-size: 1rem; font-weight: 900; }
.footer-links { display: grid; gap: 0.5rem; list-style: none; }
.footer-links a { color: #94a3b8; }
.footer-links a:hover { color: #ffffff; }
.footer-bottom { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid #334155; color: #64748b; font-size: 0.88rem; text-align: center; }
.toast-container { position: fixed; left: 50%; bottom: 24px; z-index: 999; display: flex; align-items: center; gap: 0.6rem; padding: 0.8rem 1.05rem; color: #ffffff; background: var(--color-text-main); border-radius: var(--radius-pill); box-shadow: 0 18px 40px rgba(15, 23, 42, 0.28); opacity: 0; pointer-events: none; transform: translateX(-50%) translateY(22px); transition: opacity 0.22s, transform 0.22s; }
.toast-container.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast-icon { display: grid; place-items: center; width: 22px; height: 22px; background: var(--color-success); border-radius: 50%; font-size: 0.75rem; font-weight: 900; }

/* Mobile */
@media (max-width: 760px) {
  .container { width: min(100% - 1.1rem, 1180px); }
  .header-container { min-height: 66px; }
  .logo { font-size: 1.1rem; }
  .logo-mark, .logo > span:first-child:not(.logo-text):not(.toast-icon) { width: 2rem; height: 2rem; border-radius: 0.7rem; }
  .mobile-menu-toggle { display: block; }
  .nav-links { position: absolute; inset: 66px 0 auto 0; display: none; flex-direction: column; align-items: stretch; gap: 0.3rem; padding: 0.75rem; background: #ffffff; border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-md); }
  .nav-links.open { display: flex; }
  .nav-links a { justify-content: center; width: 100%; border-radius: var(--radius-md); }
  .hero, .conversion-page .hero { padding-bottom: 1.8rem; }
  .breadcrumb-section { justify-content: flex-start; }
  .hero-copy { text-align: left; padding-bottom: 1.5rem; }
  h1 { font-size: clamp(2rem, 11vw, 3.1rem); }
  h2 { font-size: clamp(1.35rem, 8vw, 1.8rem); }
  .hero-subtitle, .page-intro { margin-inline: 0; font-size: 1rem; }
  .hero-badges, .answer-badge-row { justify-content: flex-start; gap: 0.5rem; }
  .mini-badge, .hero-badges span { flex: 1 1 calc(50% - 0.5rem); justify-content: center; white-space: normal; text-align: center; }
  .tool-card-header { flex-direction: column; align-items: flex-start; }
  .card, .tool-card, .table-card { padding: 1rem; border-radius: 18px; }
  .result-container { align-items: stretch; flex-direction: column; }
  .result-container .btn { width: 100%; }
  .section-stack { gap: 1.4rem; margin-top: 0; }
  .info-block { grid-template-columns: 1fr; }
  .popular-group { padding: 0.85rem; }
  .popular-conversions { gap: 0.5rem; }
  .popular-btn { flex: 1 1 calc(50% - 0.5rem); justify-content: center; padding-inline: 0.6rem; text-align: center; }
  .utility-table { min-width: 560px; font-size: 0.86rem; }
  .wide-table { min-width: 780px; }
  .quick-summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .summary-tile, .usecase-card, .method-card, .mistake-card, .mini-card, .step-card, .ingredient-answer-card { padding: 0.9rem; }
  .formula-panel { padding: 1rem; }
  .input-unit { min-width: 3.4rem; }
  main.container > section:not(:last-child), main.container > div:not(:last-child) { margin-bottom: 1.45rem; }
  .site-footer { margin-top: 2.5rem; }
}

@media (max-width: 520px) {
  .ingredient-answer-grid { grid-template-columns: 1fr; }
  .immediate-answer-card { padding: 1.15rem 1rem; }
  .immediate-answer-value { font-size: clamp(1.65rem, 10vw, 2.25rem); }
  .result-value { font-size: 1.15rem; }
}

@media (max-width: 420px) {
  .quick-summary-grid { grid-template-columns: 1fr; }
  .mini-badge, .hero-badges span, .popular-btn { flex-basis: 100%; }
  .input-field { padding-inline: 0.8rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}

/* Legal pages */
.legal-page {
  width: min(100% - 2rem, 960px);
  margin-inline: auto;
}

.legal-page .card p + p {
  margin-top: 0.85rem;
}

.legal-list {
  display: grid;
  gap: 0.55rem;
  margin: 0.9rem 0 1rem 1.2rem;
  color: var(--color-text-muted);
}

.legal-list li {
  padding-left: 0.25rem;
}

.legal-page h3 {
  margin-top: 1.15rem;
  margin-bottom: 0.45rem;
}

@media (max-width: 760px) {
  .legal-page {
    width: min(100% - 1rem, 960px);
  }
}

/* 404 page */
.error-404-hero {
  padding-bottom: 2.5rem;
}

.error-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0.5rem auto 1rem;
  padding: 0.35rem 1.1rem;
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: var(--radius-pill);
  background: #ffffff;
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 10vw, 5rem);
  font-weight: 900;
  line-height: 1;
  box-shadow: var(--shadow-md);
}

.error-404-page {
  width: min(100% - 2rem, 1080px);
  margin-inline: auto;
}

.error-404-title {
  font-size: clamp(1.55rem, 5vw, 2.4rem);
}

@media (max-width: 760px) {
  .error-404-page {
    width: min(100% - 1rem, 1080px);
  }

  .error-code {
    font-size: clamp(2.25rem, 18vw, 4rem);
  }
}

/* Custom cookie consent banner */
.cookie-consent {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  z-index: 9999;
  width: min(100% - 2rem, 980px);
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: 0 28px 80px rgba(15, 23, 42, 0.24);
  overflow: hidden;
  transform: translateX(-50%);
}

.cookie-consent__main {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1rem;
}

.cookie-consent__text h2 {
  margin-bottom: 0.35rem;
  font-size: 1.2rem;
  border-bottom: 0;
  padding-bottom: 0;
}

.cookie-consent__text p {
  font-size: 0.93rem;
}

.cookie-consent__links {
  margin-top: 0.45rem;
  font-size: 0.88rem;
}

.cookie-consent__links a {
  font-weight: 800;
}

.cookie-consent__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  justify-content: flex-end;
}

.cookie-consent__preferences {
  padding: 1rem;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.cookie-consent__preferences h3 {
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.cookie-option {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.8rem;
  margin-bottom: 0.65rem;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.cookie-option input {
  margin-top: 0.28rem;
  flex: 0 0 auto;
}

.cookie-option span {
  display: grid;
  gap: 0.15rem;
}

.cookie-option strong {
  color: var(--color-text-main);
}

.cookie-option small {
  color: var(--color-text-muted);
  line-height: 1.45;
}

.cookie-consent__actions--prefs {
  margin-top: 0.8rem;
}

.cookie-manage-btn {
  position: fixed;
  left: 1rem;
  bottom: 1rem;
  z-index: 9998;
  padding: 0.65rem 0.85rem;
  color: var(--color-primary);
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-md);
  font-size: 0.85rem;
  font-weight: 800;
}

.cookie-manage-btn:hover {
  color: #ffffff;
  background: var(--color-primary);
}

@media (max-width: 760px) {
  .cookie-consent {
    width: min(100% - 1rem, 980px);
    bottom: 0.5rem;
    border-radius: 18px;
  }

  .cookie-consent__main {
    grid-template-columns: 1fr;
    padding: 0.9rem;
  }

  .cookie-consent__actions {
    justify-content: stretch;
  }

  .cookie-consent__actions .btn {
    flex: 1 1 100%;
    width: 100%;
  }

  .cookie-consent__preferences {
    padding: 0.9rem;
    max-height: 55vh;
    overflow-y: auto;
  }

  .cookie-manage-btn {
    left: 0.5rem;
    bottom: 0.5rem;
    font-size: 0.78rem;
  }
}

/* Tablet spacing: 33px left/right */
@media (min-width: 761px) and (max-width: 1024px) {
  .container,
  .conversion-page main.container,
  .legal-page,
  .error-404-page {
    width: calc(100% - 66px);
    max-width: 1180px;
    margin-inline: auto;
  }
}

/* Mobile spacing: 23px left/right */
@media (max-width: 760px) {
  .container,
  .conversion-page main.container,
  .legal-page,
  .error-404-page {
    width: calc(100% - 46px);
    max-width: 1180px;
    margin-inline: auto;
  }
}

/* Final mobile menu*/

@media (max-width: 760px) {
  .header-container {
    position: relative;
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  /* Logo stays left */
  .logo {
    flex: 0 1 auto;
    min-width: 0;
  }

  /* Remove nav from header flow so it doesn't create right-side empty space */
  .nav-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: min(310px, calc(100vw - 46px));
    z-index: 1000;
    margin: 0;
    padding: 0;
  }

  /* Button stays clean on the right */
  .mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 0;
    margin-left: auto;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: #ffffff;
    box-shadow: var(--shadow-sm);
  }

  .mobile-menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    margin: 0;
    background: var(--color-text-main);
    border-radius: 999px;
  }

  /* Dropdown menu */
  .nav-links {
    position: static;
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
    padding: 0.75rem;
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 18px;
    box-shadow: 0 18px 45px rgba(15, 23, 42, 0.16);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    width: 100%;
    justify-content: flex-start;
    padding: 0.85rem 1rem;
    border-radius: 12px;
    font-size: 0.95rem;
  }

  .nav-links a:hover,
  .nav-links a:focus-visible,
  .nav-links a.active {
    background: var(--color-primary-soft);
    color: var(--color-primary);
  }
}