/* Propane Grill Time Calculator — clean, friendly, flame-orange, mobile-first */
:root {
  --flame: #f97316;
  --flame-dark: #ea580c;
  --flame-deep: #c2410c;
  --ember: #fb923c;
  --gold: #fcd34d;
  --ink: #1f2937;
  --ink-soft: #4b5563;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #fff7ed;
  --card: #ffffff;
  --card-soft: #fffbf5;
  --shadow: 0 1px 2px rgba(17,24,39,.06), 0 8px 24px rgba(194,65,12,.06);
  --radius: 16px;
  --maxw: 880px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 50% -200px, #ffedd5 0%, rgba(255,237,213,0) 70%),
    var(--bg);
  line-height: 1.6;
  font-size: 17px;
}
a { color: var(--flame-dark); }
a:hover { color: var(--flame-deep); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 18px 64px; }

/* Header */
.page-header { text-align: center; padding: 30px 0 8px; }
.site-title { margin: 0; font-size: 1.15rem; font-weight: 800; letter-spacing: -.01em; }
.site-title a { color: var(--flame-deep); text-decoration: none; }
.site-title .fl { color: var(--flame); }
.page-header h1 {
  font-size: clamp(1.7rem, 5vw, 2.5rem);
  line-height: 1.15; margin: 14px 0 8px; letter-spacing: -.02em; color: var(--ink);
}
.tagline { color: var(--ink-soft); margin: 0 auto; max-width: 620px; font-size: 1.05rem; }
.hero-cta-line { color: var(--muted); font-size: .95rem; margin-top: 10px; }
.header-badges { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-top: 16px; }
.header-badge {
  display: inline-flex; align-items: center; gap: 6px; font-size: .82rem; font-weight: 600;
  background: #fff; border: 1px solid var(--line); color: var(--ink-soft);
  padding: 6px 12px; border-radius: 999px;
}
.header-badge i { color: var(--flame); }

/* Nav */
.mini-nav {
  display: flex; gap: 6px; flex-wrap: wrap; justify-content: center;
  margin: 14px 0 22px; position: relative;
}
.nav-link {
  display: inline-flex; align-items: center; gap: 6px; text-decoration: none;
  color: var(--ink-soft); font-weight: 600; font-size: .9rem;
  padding: 9px 14px; border-radius: 10px; border: 1px solid transparent;
}
.nav-link:hover, .nav-link.active { background: #fff; border-color: var(--line); color: var(--flame-deep); }
.nav-dropdown { position: relative; }
.dropdown-menu {
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  box-shadow: var(--shadow); padding: 6px; min-width: 240px; z-index: 40;
  display: none;
}
.nav-dropdown:hover .dropdown-menu, .nav-dropdown:focus-within .dropdown-menu { display: block; }
.dropdown-menu a {
  display: flex; align-items: center; gap: 8px; padding: 10px 12px; border-radius: 8px;
  text-decoration: none; color: var(--ink-soft); font-size: .9rem; font-weight: 500;
}
.dropdown-menu a:hover, .dropdown-menu a.active { background: var(--card-soft); color: var(--flame-deep); }
.dropdown-arrow { font-size: .9em; }

/* Calculator card */
.calc {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 22px; margin-bottom: 22px;
}
.calc-grid { display: grid; grid-template-columns: 1fr; gap: 22px; }
@media (min-width: 760px) { .calc-grid { grid-template-columns: 1fr 1fr; gap: 28px; } }

.field { margin-bottom: 20px; }
.field:last-child { margin-bottom: 0; }
.field > label, .field-label {
  display: block; font-weight: 700; font-size: .92rem; margin-bottom: 10px; color: var(--ink);
}
.field-hint { color: var(--muted); font-size: .82rem; font-weight: 500; margin: 4px 0 0; }

/* Preset buttons / toggles */
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; }
.chip, .toggle-btn {
  appearance: none; cursor: pointer; font: inherit; font-weight: 600; font-size: .9rem;
  min-height: 44px; padding: 10px 14px; border-radius: 10px;
  border: 1.5px solid var(--line); background: #fff; color: var(--ink-soft);
  display: inline-flex; align-items: center; gap: 6px; transition: .12s;
}
.chip:hover, .toggle-btn:hover { border-color: var(--ember); color: var(--flame-deep); }
.chip.active, .toggle-btn.active {
  background: var(--flame); border-color: var(--flame); color: #fff;
  box-shadow: 0 2px 8px rgba(234,88,12,.25);
}
.mode-toggle { display: inline-flex; gap: 0; border: 1.5px solid var(--line); border-radius: 12px; padding: 4px; background: var(--card-soft); }
.mode-toggle .toggle-btn { border: none; background: transparent; box-shadow: none; }
.mode-toggle .toggle-btn.active { background: var(--flame); color: #fff; }

/* number / text inputs */
input[type="number"], input[type="text"] {
  width: 100%; font: inherit; font-weight: 600; min-height: 48px;
  padding: 10px 14px; border: 1.5px solid var(--line); border-radius: 10px;
  background: #fff; color: var(--ink);
}
input[type="number"]:focus, input[type="text"]:focus, input[type="range"]:focus-visible {
  outline: 3px solid rgba(249,115,22,.35); outline-offset: 1px; border-color: var(--flame);
}
.input-suffix { position: relative; }
.input-suffix .suffix { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: .85rem; font-weight: 600; pointer-events: none; }
.input-suffix input { padding-right: 64px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* Range slider */
.slider-row { display: flex; align-items: center; gap: 14px; }
input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 10px;
  border-radius: 999px; background: linear-gradient(90deg, var(--flame), var(--gold)); outline-offset: 4px;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 28px; height: 28px; border-radius: 50%;
  background: #fff; border: 3px solid var(--flame); box-shadow: 0 2px 6px rgba(0,0,0,.2); cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 28px; height: 28px; border-radius: 50%; background: #fff; border: 3px solid var(--flame); cursor: pointer;
}
.slider-val { font-weight: 800; font-size: 1.1rem; min-width: 56px; text-align: right; color: var(--flame-deep); }

/* Result panel */
.result {
  background: linear-gradient(160deg, #1f2937 0%, #111827 100%);
  color: #fff; border-radius: var(--radius); padding: 26px 22px; text-align: center;
  box-shadow: 0 10px 30px rgba(17,24,39,.22); border: 1px solid #0b1220;
}
.result-eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .72rem; font-weight: 700; color: var(--ember); margin: 0 0 6px; }
.big-time { font-size: clamp(2.1rem, 8vw, 3.4rem); font-weight: 800; line-height: 1.05; letter-spacing: -.02em; color: #fff; }
.sub-result { color: #d1d5db; font-size: 1rem; margin-top: 6px; min-height: 1.4em; }
.sub-result.warn { color: var(--gold); font-weight: 600; }
.result-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 20px; }
.rstat { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1); border-radius: 12px; padding: 12px 8px; }
.rstat .v { font-size: 1.25rem; font-weight: 800; color: #fff; }
.rstat .l { font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; color: #9ca3af; margin-top: 2px; }
.result-actions { margin-top: 18px; }
.copy-btn {
  appearance: none; cursor: pointer; font: inherit; font-weight: 700; font-size: .92rem;
  min-height: 44px; padding: 11px 20px; border-radius: 10px; border: none;
  background: var(--flame); color: #fff; display: inline-flex; align-items: center; gap: 8px;
}
.copy-btn:hover { background: var(--flame-dark); }
.formula-box {
  margin-top: 16px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  border-radius: 10px; padding: 12px 14px; font-size: .86rem; color: #cbd5e1; text-align: left;
}
.formula-box code { color: var(--gold); font-weight: 600; }
.formula-box .formula-nums { margin-top: 6px; color: #e5e7eb; font-variant-numeric: tabular-nums; }
.formula-box .formula-nums strong { color: var(--gold); }

/* Share bar */
.share-bar { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: center; margin: 18px 0; }
.share-label { font-weight: 700; color: var(--ink-soft); font-size: .9rem; }
.share-btn {
  display: inline-flex; align-items: center; gap: 6px; text-decoration: none;
  background: #fff; border: 1px solid var(--line); color: var(--ink-soft);
  font-weight: 600; font-size: .85rem; padding: 9px 13px; border-radius: 8px; cursor: pointer; min-height: 40px;
}
.share-btn:hover { border-color: var(--ember); color: var(--flame-deep); }

/* Content sections */
.content-section { margin: 40px 0; }
.content-section h2 { font-size: 1.55rem; letter-spacing: -.01em; margin: 0 0 14px; }
.content-section h3 { font-size: 1.15rem; margin: 26px 0 10px; }
.content-section p { color: var(--ink-soft); }
.intro-text { font-size: 1.08rem; color: var(--ink); }
.card-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin: 18px 0; }
@media (min-width: 640px) { .card-grid { grid-template-columns: repeat(3, 1fr); } }
.mini-card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px; box-shadow: var(--shadow); }
.mini-card i { font-size: 1.5rem; color: var(--flame); }
.mini-card h3, .mini-card h4 { margin: 8px 0 6px; font-size: 1.05rem; }
.mini-card p { font-size: .92rem; margin: 0; }

.worked-example {
  background: var(--card-soft); border: 1px solid var(--line); border-left: 4px solid var(--flame);
  border-radius: 12px; padding: 18px 20px; margin: 18px 0;
}
.worked-example code { background: #fff; border: 1px solid var(--line); padding: 2px 6px; border-radius: 6px; font-size: .9em; }
.math-line { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; background: #1f2937; color: #fcd34d; padding: 12px 14px; border-radius: 10px; overflow-x: auto; font-size: .9rem; }

table.data { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: .92rem; }
table.data th, table.data td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
table.data th { background: var(--card-soft); font-weight: 700; }
table.data tr:hover td { background: #fffaf3; }

.feature-list { padding-left: 1.1rem; color: var(--ink-soft); }
.feature-list li { margin: 7px 0; }

/* FAQ accordion */
.faq-item { border: 1px solid var(--line); border-radius: 12px; margin-bottom: 10px; background: var(--card); overflow: hidden; }
.faq-question { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 16px 18px; cursor: pointer; font-weight: 700; font-size: 1rem; min-height: 44px; }
.faq-question i { transition: transform .2s; color: var(--flame); flex-shrink: 0; }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .25s ease; padding: 0 18px; }
.faq-item.open .faq-answer { max-height: 800px; padding-bottom: 16px; }
.faq-answer p { margin: 0 0 8px; color: var(--ink-soft); }

/* Use-case pages */
.use-case-hero { text-align: center; padding: 24px 0 10px; }
.use-case-hero h1 { font-size: clamp(1.7rem, 5vw, 2.4rem); margin: 0 0 10px; }
.hero-subtitle { color: var(--ink-soft); max-width: 620px; margin: 0 auto 18px; font-size: 1.05rem; }
.cta-button {
  display: inline-flex; align-items: center; gap: 8px; background: var(--flame); color: #fff;
  text-decoration: none; font-weight: 700; padding: 13px 24px; border-radius: 12px; min-height: 48px;
  box-shadow: 0 4px 14px rgba(234,88,12,.3);
}
.cta-button:hover { background: var(--flame-dark); color: #fff; }
.use-case-section { margin: 32px 0; }
.use-case-section h2 { font-size: 1.45rem; margin: 0 0 12px; }
.benefit-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin: 18px 0; }
@media (min-width: 640px) { .benefit-grid { grid-template-columns: repeat(3, 1fr); } }
.benefit-card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 18px; box-shadow: var(--shadow); }
.benefit-card i { font-size: 1.6rem; color: var(--flame); }
.benefit-card h3 { margin: 8px 0 6px; font-size: 1.05rem; }
.benefit-card p { margin: 0; font-size: .92rem; color: var(--ink-soft); }
.tips-list { padding-left: 1.1rem; color: var(--ink-soft); }
.tips-list li { margin: 9px 0; }

.recommended-gear { background: var(--card-soft); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; }
.recommended-gear ul { padding-left: 1.1rem; }
.recommended-gear li { margin: 8px 0; color: var(--ink-soft); }
.gear-note { font-size: .82rem; color: var(--muted); margin: 8px 0 0; }

.cta-section { text-align: center; background: var(--card-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 20px; margin: 32px 0; }
.cta-section h2 { margin: 0 0 8px; }
.cta-section p { color: var(--ink-soft); margin: 0 0 16px; }

.cross-links { display: grid; grid-template-columns: 1fr; gap: 12px; margin: 28px 0; }
@media (min-width: 640px) { .cross-links { grid-template-columns: repeat(3, 1fr); } }
.cross-link-card { display: flex; align-items: center; gap: 12px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; text-decoration: none; color: var(--ink); box-shadow: var(--shadow); }
.cross-link-card:hover { border-color: var(--ember); }
.cross-link-card i { font-size: 1.5rem; color: var(--flame); }
.cross-link-card h4 { margin: 0 0 2px; font-size: 1rem; }
.cross-link-card p { margin: 0; font-size: .82rem; color: var(--muted); }

/* Ad section */
.ad-section { margin: 28px 0; text-align: center; }
.ad-container { min-height: 90px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); margin-top: 40px; padding-top: 28px; }
.footer-content { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 700px) { .footer-content { grid-template-columns: 2fr 1fr 1fr; } }
.footer-brand .footer-logo { font-weight: 800; color: var(--flame-deep); font-size: 1.05rem; }
.footer-brand p { color: var(--muted); font-size: .9rem; }
.footer-links h4 { font-size: .9rem; margin: 0 0 10px; }
.footer-links a { display: block; color: var(--ink-soft); text-decoration: none; font-size: .9rem; padding: 4px 0; }
.footer-links a:hover { color: var(--flame-deep); }
.footer-bottom { border-top: 1px solid var(--line); margin-top: 24px; padding: 18px 0; text-align: center; color: var(--muted); font-size: .85rem; }
.footer-legal-links a { color: var(--ink-soft); text-decoration: none; }
.footer-legal-links a:hover { color: var(--flame-deep); }
.affiliate-disclosure { font-size: .8rem; }

/* trust/content page wrapper */
.page-wrap { max-width: 720px; margin: 0 auto; }
.page-hero { text-align: center; padding: 20px 0; }
.page-hero h1 { font-size: clamp(1.6rem, 5vw, 2.2rem); margin: 0 0 8px; }
.page-hero p { color: var(--ink-soft); }

kbd { background: #fff; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 6px; padding: 1px 7px; font-size: .85em; font-weight: 600; font-family: inherit; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}