/* FitBear Calculators — shared design system */
:root {
    --orange: #FF8C42;
    --orange-light: #FFB088;
    --orange-dark: #E67A35;
    --teal: #4ECDC4;
    --teal-light: #7EDDD6;
    --teal-dark: #3DBDB5;
    --cream: #FFF8F0;
    --cream-dark: #FFF0E0;
    --dark: #2D3436;
    --gray: #636E72;
    --gray-light: #B2BEC3;
    --white: #FFFFFF;
    --success: #27AE60;
    --danger: #E74C3C;
    --shadow-soft: 0 4px 20px rgba(45, 52, 54, 0.08);
    --shadow-medium: 0 8px 40px rgba(45, 52, 54, 0.12);
    --shadow-orange: 0 8px 30px rgba(255, 140, 66, 0.3);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Quicksand', sans-serif;
    background: var(--cream);
    color: var(--dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: 'Nunito', sans-serif; font-weight: 800; line-height: 1.2; }
a { color: var(--orange-dark); text-decoration: none; font-weight: 600; }
a:hover { text-decoration: underline; }

/* Top nav (consistent across calc pages) */
.calc-nav {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255, 248, 240, 0.92);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(99, 110, 114, 0.12);
}
.calc-nav-inner {
    max-width: 1100px; margin: 0 auto;
    padding: 0.9rem 1.25rem;
    display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.calc-logo {
    display: inline-flex; align-items: center; gap: 0.5rem;
    font-family: 'Nunito', sans-serif; font-weight: 900;
    font-size: 1.35rem; color: var(--orange);
}
.calc-logo:hover { text-decoration: none; }
.calc-logo-icon { font-size: 1.6rem; }
.calc-nav-links { display: flex; gap: 1.25rem; flex-wrap: wrap; align-items: center; }
.calc-nav-links a {
    color: var(--dark); font-weight: 700; font-size: 0.92rem;
}
.calc-nav-links a:hover { color: var(--orange); text-decoration: none; }
.calc-nav-cta {
    background: var(--orange); color: var(--white) !important;
    padding: 0.55rem 1.1rem; border-radius: 50px;
    box-shadow: var(--shadow-orange);
    transition: transform 0.2s ease;
}
.calc-nav-cta:hover { transform: translateY(-1px); text-decoration: none; }

/* Breadcrumbs */
.breadcrumbs {
    max-width: 1100px; margin: 0 auto; padding: 1rem 1.25rem 0;
    color: var(--gray); font-size: 0.85rem;
}
.breadcrumbs a { color: var(--gray); font-weight: 600; }
.breadcrumbs a:hover { color: var(--orange); }
.breadcrumbs span { margin: 0 0.4rem; color: var(--gray-light); }

/* Page wrapper */
.calc-wrap {
    max-width: 1100px; margin: 0 auto;
    padding: 1.5rem 1.25rem 4rem;
}

/* Hero header */
.calc-hero {
    background: var(--white);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(178, 190, 195, 0.25);
    margin-bottom: 1.5rem;
}
.calc-hero .eyebrow {
    display: inline-block;
    background: linear-gradient(135deg, var(--orange-light), var(--orange));
    color: var(--white);
    font-size: 0.75rem; font-weight: 800;
    letter-spacing: 1px; text-transform: uppercase;
    padding: 0.35rem 0.85rem; border-radius: 50px;
    margin-bottom: 0.85rem;
}
.calc-hero h1 {
    font-size: clamp(1.85rem, 3.4vw, 2.6rem);
    margin-bottom: 0.6rem;
    color: var(--dark);
}
.calc-hero p.lede {
    color: var(--gray); max-width: 70ch; font-size: 1.05rem;
}

/* Calculator card */
.calc-card {
    background: var(--white);
    border-radius: 24px;
    padding: 1.75rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(178, 190, 195, 0.25);
    margin-bottom: 1.5rem;
}
.calc-card h2 {
    font-size: 1.4rem; margin-bottom: 1rem;
    color: var(--dark);
}

/* Form grid */
.calc-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}
.calc-form .full { grid-column: 1 / -1; }
.field { display: grid; gap: 0.4rem; }
.field label {
    font-weight: 700; font-size: 0.9rem; color: var(--dark);
    display: flex; justify-content: space-between; align-items: center;
}
.field label .hint { font-weight: 500; color: var(--gray-light); font-size: 0.78rem; }
.field input[type="number"],
.field input[type="text"],
.field select {
    width: 100%;
    padding: 0.75rem 0.9rem;
    border: 1.5px solid rgba(99, 110, 114, 0.2);
    border-radius: 12px;
    background: var(--cream);
    font-family: 'Quicksand', sans-serif;
    font-size: 1rem; color: var(--dark);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    appearance: none;
}
.field input:focus, .field select:focus {
    outline: none;
    border-color: var(--orange);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(255, 140, 66, 0.18);
}
.field select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23636E72' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

/* Toggle group (radio segmented) */
.toggle-group {
    display: inline-flex;
    background: var(--cream);
    padding: 0.25rem;
    border-radius: 12px;
    border: 1.5px solid rgba(99, 110, 114, 0.15);
    gap: 0.15rem;
}
.toggle-group input { display: none; }
.toggle-group label {
    padding: 0.45rem 0.95rem;
    font-size: 0.88rem; font-weight: 700;
    border-radius: 9px; cursor: pointer;
    color: var(--gray); transition: all 0.2s ease;
}
.toggle-group input:checked + label {
    background: var(--white); color: var(--orange-dark);
    box-shadow: var(--shadow-soft);
}

/* Action row */
.calc-actions {
    margin-top: 1.5rem;
    display: flex; gap: 0.75rem; flex-wrap: wrap;
}
.btn {
    border: none; cursor: pointer;
    padding: 0.85rem 1.6rem;
    border-radius: 50px;
    font-family: 'Nunito', sans-serif;
    font-weight: 800; font-size: 0.95rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-primary {
    background: var(--orange); color: var(--white);
    box-shadow: var(--shadow-orange);
}
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost {
    background: transparent; color: var(--gray);
    border: 1.5px solid rgba(99, 110, 114, 0.2);
}
.btn-ghost:hover { color: var(--dark); border-color: var(--gray); }

/* Result panel */
.result {
    margin-top: 1.5rem;
    background: linear-gradient(135deg, var(--cream) 0%, var(--cream-dark) 100%);
    border: 1.5px solid rgba(255, 140, 66, 0.25);
    border-radius: 18px;
    padding: 1.5rem;
}
.result.hidden { display: none; }
.result h3 {
    font-size: 1.05rem; color: var(--gray);
    text-transform: uppercase; letter-spacing: 1px;
    margin-bottom: 0.5rem;
}
.result .big {
    font-family: 'Nunito', sans-serif; font-weight: 900;
    font-size: clamp(2rem, 4vw, 2.8rem);
    color: var(--orange-dark); line-height: 1.1;
    margin-bottom: 0.4rem;
}
.result .sub { color: var(--gray); font-size: 0.95rem; }
.result-grid {
    display: grid; gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    margin-top: 1rem;
}
.result-tile {
    background: var(--white);
    border-radius: 14px;
    padding: 1rem 1.1rem;
    border: 1px solid rgba(178, 190, 195, 0.3);
}
.result-tile .label {
    font-size: 0.75rem; color: var(--gray);
    text-transform: uppercase; letter-spacing: 0.5px;
    font-weight: 700; margin-bottom: 0.35rem;
}
.result-tile .value {
    font-family: 'Nunito', sans-serif; font-weight: 800;
    font-size: 1.4rem; color: var(--dark);
}
.result-tile .value small { color: var(--gray); font-weight: 600; font-size: 0.85rem; }

/* Tables (rep max chart, plate loader) */
.calc-table {
    width: 100%; border-collapse: collapse;
    margin-top: 1rem;
    font-size: 0.95rem;
}
.calc-table th, .calc-table td {
    padding: 0.7rem 0.85rem; text-align: left;
    border-bottom: 1px solid rgba(178, 190, 195, 0.3);
}
.calc-table th {
    font-family: 'Nunito', sans-serif; font-weight: 800;
    background: var(--cream); color: var(--dark);
    font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.5px;
}
.calc-table tr:last-child td { border-bottom: none; }

/* Plate visual */
.plate-stack {
    display: flex; align-items: center; justify-content: center;
    gap: 2px; margin: 1rem 0;
    min-height: 80px;
}
.plate {
    border-radius: 4px;
    display: flex; align-items: center; justify-content: center;
    color: var(--white); font-weight: 800;
    font-family: 'Nunito', sans-serif; font-size: 0.78rem;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}
.bar {
    height: 6px; background: var(--gray); border-radius: 3px;
    flex-grow: 1; min-width: 60px; max-width: 200px;
}
.collar { width: 12px; height: 30px; background: var(--gray-light); border-radius: 2px; }

/* Info / explanation block */
.info-block {
    background: var(--white);
    border-radius: 24px;
    padding: 1.75rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(178, 190, 195, 0.25);
    margin-bottom: 1.5rem;
}
.info-block h2 { font-size: 1.4rem; margin-bottom: 0.85rem; }
.info-block h3 { font-size: 1.1rem; margin: 1.25rem 0 0.5rem; color: var(--orange-dark); }
.info-block p, .info-block li { color: var(--gray); margin-bottom: 0.75rem; }
.info-block ul, .info-block ol { padding-left: 1.5rem; margin-bottom: 0.75rem; }
.info-block code {
    background: var(--cream-dark);
    padding: 0.15rem 0.45rem;
    border-radius: 6px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.92em;
    color: var(--orange-dark);
}
.formula {
    background: var(--cream);
    border-left: 4px solid var(--orange);
    padding: 1rem 1.25rem;
    border-radius: 12px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.95rem;
    color: var(--dark);
    margin: 0.75rem 0;
    white-space: pre-wrap;
}

/* FAQ */
.faq-block details {
    background: var(--white);
    border: 1px solid rgba(178, 190, 195, 0.25);
    border-radius: 14px;
    padding: 1rem 1.2rem;
    margin-bottom: 0.7rem;
    box-shadow: var(--shadow-soft);
}
.faq-block summary {
    cursor: pointer; list-style: none;
    font-family: 'Nunito', sans-serif; font-weight: 800;
    font-size: 1rem; color: var(--dark);
    display: flex; justify-content: space-between; align-items: center;
}
.faq-block summary::after {
    content: '+'; color: var(--orange);
    font-size: 1.25rem; font-weight: 900;
    margin-left: 1rem; transition: transform 0.2s ease;
}
.faq-block details[open] summary::after { transform: rotate(45deg); }
.faq-block details[open] summary { color: var(--orange-dark); }
.faq-block details p { margin-top: 0.6rem; color: var(--gray); }
.faq-block summary::-webkit-details-marker { display: none; }

/* Cross-sell calculator chips */
.related-block { padding: 1.5rem 0; }
.related-block h2 {
    font-size: 1.25rem; margin-bottom: 0.85rem;
    color: var(--dark);
}
.chip-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip {
    background: var(--white);
    border: 1px solid rgba(178, 190, 195, 0.35);
    color: var(--dark) !important;
    padding: 0.55rem 1rem;
    border-radius: 50px;
    font-size: 0.88rem; font-weight: 700;
    transition: all 0.2s ease;
}
.chip:hover {
    background: var(--orange); color: var(--white) !important;
    border-color: var(--orange); text-decoration: none;
    transform: translateY(-1px);
}

/* Hub page categories */
.cat-section { margin-top: 2rem; }
.cat-section h2 {
    font-size: 1.5rem; margin-bottom: 1rem;
    color: var(--dark);
    display: flex; align-items: center; gap: 0.6rem;
}
.cat-section h2 .icon { font-size: 1.4rem; }
.calc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
}
.calc-tile {
    background: var(--white);
    border: 1px solid rgba(178, 190, 195, 0.25);
    border-radius: 18px;
    padding: 1.25rem 1.35rem;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    color: var(--dark) !important;
    display: block;
    box-shadow: var(--shadow-soft);
}
.calc-tile:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
    border-color: var(--orange-light);
    text-decoration: none;
}
.calc-tile .tile-icon {
    width: 42px; height: 42px; border-radius: 12px;
    background: linear-gradient(135deg, var(--orange-light), var(--orange));
    color: var(--white); font-size: 1.2rem;
    display: inline-flex; align-items: center; justify-content: center;
    margin-bottom: 0.85rem;
}
.calc-tile h3 {
    font-size: 1.05rem; margin-bottom: 0.35rem;
}
.calc-tile p {
    color: var(--gray); font-size: 0.9rem; line-height: 1.5;
}

/* Final CTA */
.cta-strip {
    margin-top: 2.5rem;
    background: linear-gradient(135deg, var(--orange), var(--orange-dark));
    border-radius: 24px;
    padding: 2.25rem;
    color: var(--white);
    text-align: center;
    box-shadow: var(--shadow-orange);
}
.cta-strip h2 { font-size: 1.6rem; margin-bottom: 0.5rem; color: var(--white); }
.cta-strip p { color: rgba(255,255,255,0.92); margin-bottom: 1.25rem; }
.cta-strip .btn {
    background: var(--white); color: var(--orange-dark);
    padding: 0.85rem 1.75rem;
    box-shadow: 0 8px 30px rgba(0,0,0,0.18);
}
.cta-strip .btn:hover { transform: translateY(-2px); }

/* Section heading on hub */
.hub-intro h1 { font-size: clamp(2rem, 4vw, 2.8rem); margin-bottom: 0.5rem; }
.hub-intro p { color: var(--gray); font-size: 1.1rem; max-width: 60ch; }

@media (max-width: 640px) {
    .calc-nav-inner { flex-direction: column; align-items: flex-start; gap: 0.6rem; }
    .calc-nav-links { gap: 0.85rem; }
    .calc-hero, .calc-card, .info-block { padding: 1.35rem; }
    .cta-strip { padding: 1.75rem; }
}

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