/*
 * grillmath.com styles, on top of Bootstrap 5.3.
 * Own tokens use the --gm-* prefix. No external fonts: system font stack.
 */
:root,
[data-bs-theme='light'] {
    --gm-ember: #d9480f;
    --gm-ember-strong: #b33a0b;
    --gm-flame: #f59f00;
    --gm-charcoal: #1c1917;
    --gm-surface: #faf7f2;
    --gm-card: #ffffff;
    --gm-border: #e7e1d8;

    --bs-primary: var(--gm-ember);
    --bs-primary-rgb: 217, 72, 15;
    --bs-link-color: var(--gm-ember-strong);
    --bs-link-color-rgb: 179, 58, 11;
    --bs-link-hover-color: var(--gm-charcoal);
    --bs-body-bg: var(--gm-surface);
}

[data-bs-theme='dark'] {
    --gm-ember: #ff7a3d;
    --gm-ember-strong: #ff9a66;
    --gm-surface: #141210;
    --gm-card: #1f1c19;
    --gm-border: #36312b;

    --bs-primary: var(--gm-ember);
    --bs-primary-rgb: 255, 122, 61;
    --bs-link-color: var(--gm-ember-strong);
    --bs-link-color-rgb: 255, 154, 102;
    --bs-link-hover-color: #ffffff;
    --bs-body-bg: var(--gm-surface);
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1 0 auto;
}

.skip-link:focus {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    z-index: 1100;
    padding: 0.5rem 1rem;
    background: var(--gm-card);
    border-radius: 0.5rem;
}

/* ---------- Header ---------- */
.site-header {
    background: var(--gm-charcoal);
}

.site-header .navbar-brand {
    font-weight: 800;
    letter-spacing: -0.02em;
}

.site-header .navbar-brand .bi {
    color: var(--gm-flame);
}

/* ---------- Buttons ---------- */
.btn-primary {
    --bs-btn-bg: var(--gm-ember);
    --bs-btn-border-color: var(--gm-ember);
    --bs-btn-active-bg: var(--gm-ember-strong);
    --bs-btn-active-border-color: var(--gm-ember-strong);
    --bs-btn-focus-shadow-rgb: var(--bs-primary-rgb);
}

/* :hover only on devices that really hover (on touch screens it sticks after a tap). */
@media (hover: hover) {
    .btn-primary:hover {
        --bs-btn-hover-bg: var(--gm-ember-strong);
        --bs-btn-hover-border-color: var(--gm-ember-strong);
    }
}

/* ---------- Home ---------- */
.hero {
    background:
        radial-gradient(circle at 85% 20%, rgba(245, 159, 0, 0.25), transparent 45%),
        linear-gradient(135deg, var(--gm-charcoal), #3b2a1f);
    color: #fff;
}

.hero .lead {
    color: rgba(255, 255, 255, 0.85);
}

.hero .hero-note {
    color: rgba(255, 255, 255, 0.7);
}

.tool-card {
    background: var(--gm-card);
    border: 1px solid var(--gm-border);
    border-radius: 1rem;
    height: 100%;
}

.tool-card .tool-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 0.75rem;
    background: rgba(var(--bs-primary-rgb), 0.12);
    color: var(--gm-ember);
    font-size: 1.35rem;
}

.tool-card-link {
    transition: border-color 0.15s ease, transform 0.15s ease;
}

.tool-card-link:focus-visible {
    outline: 2px solid var(--gm-ember);
    outline-offset: 2px;
}

@media (hover: hover) {
    .tool-card-link:hover {
        border-color: var(--gm-ember);
        transform: translateY(-2px);
    }
}

.tool-card-soon {
    opacity: 0.75;
}

/* ---------- Calculators ---------- */
.calc-panel {
    background: var(--gm-card);
    border: 1px solid var(--gm-border);
    border-radius: 1rem;
}

.calc-result {
    background: rgba(var(--bs-primary-rgb), 0.08);
    border: 1px solid rgba(var(--bs-primary-rgb), 0.35);
    border-radius: 1rem;
}

.calc-result .result-main {
    font-size: clamp(1.5rem, 4vw, 2.1rem);
    font-weight: 800;
    line-height: 1.15;
}

.units-toggle .btn.active {
    background: var(--gm-ember);
    border-color: var(--gm-ember);
    color: #fff;
}

@media (hover: hover) {
    .units-toggle .btn:not(.active):hover {
        background: rgba(var(--bs-primary-rgb), 0.12);
        color: var(--bs-body-color);
    }
}

.temp-table td,
.temp-table th {
    vertical-align: middle;
}

.below-safe {
    color: var(--bs-warning-text-emphasis);
}

/* ---------- Content pages ---------- */
.page-header {
    background: var(--gm-card);
    border-bottom: 1px solid var(--gm-border);
}

.prose {
    max-width: 46rem;
}

.prose h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: 2rem;
}

/* ---------- Footer ---------- */
.site-footer {
    border-top: 1px solid var(--gm-border);
}

.site-footer .footer-button {
    font-size: inherit;
    line-height: inherit;
    vertical-align: baseline;
}