/* === bmi.php === */

.bmi-page {
    padding: 0 0 4rem;
}

.bmi-hero {
    margin-top: 110px;
    padding: 2rem 1.5rem 1.25rem;
    background: linear-gradient(140deg, #f7fbf2 0%, #edf5e4 100%);
}

.bmi-shell {
    width: min(720px, calc(100% - 2rem));
    margin: 0 auto;
}

.bmi-intro {
    max-width: 620px;
    margin: 0 auto 1.25rem;
    text-align: center;
}

.bmi-intro h1 {
    margin: 0 0 0.5rem;
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--color-primary-dark);
}

.bmi-intro p {
    margin: 0;
    color: var(--color-text-light);
    line-height: 1.75;
}

.bmi-card {
    background: #fff;
    border: 1px solid rgba(31, 61, 15, 0.12);
    border-radius: 22px;
    padding: 1.5rem;
    box-shadow: 0 14px 32px rgba(31, 61, 15, 0.08);
}

.bmi-card + .bmi-card {
    margin-top: 1rem;
}

/* Form */
.bmi-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.bmi-field {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.bmi-field label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-primary-dark);
}

.bmi-field input {
    width: 100%;
    min-height: 48px;
    border: 1px solid #d9ddd3;
    border-radius: 12px;
    padding: 0 0.85rem;
    font-size: 1.05rem;
    background: #fff;
    color: #2d3426;
    box-sizing: border-box;
}

.bmi-field input:focus {
    outline: none;
    border-color: #8daf55;
    box-shadow: 0 0 0 4px rgba(141, 175, 85, 0.14);
}

.bmi-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.bmi-actions .btn {
    flex: 1;
    text-align: center;
}

/* Result */
.bmi-result {
    display: none;
    margin-top: 1.25rem;
    padding: 1.25rem;
    border: 1px solid rgba(31, 61, 15, 0.1);
    border-radius: 18px;
    background: linear-gradient(180deg, #fbfdf8, #f3f8ec);
    text-align: center;
}

.bmi-result.is-visible {
    display: block;
}

.bmi-result-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
    margin: 0 0 0.25rem;
}

.bmi-result-label {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 0 0 0.35rem;
}

.bmi-result-desc {
    margin: 0;
    color: var(--color-text-light);
    line-height: 1.65;
    font-size: 0.95rem;
}

/* Color coding */
.bmi-color-underweight { color: #3C7BBF; }
.bmi-color-normal { color: #3B6D11; }
.bmi-color-overweight { color: #BA7517; }
.bmi-color-obese { color: #C0392B; }

/* Scale bar */
.bmi-scale {
    margin-top: 1rem;
    position: relative;
}

.bmi-scale-bar {
    display: flex;
    border-radius: 999px;
    overflow: hidden;
    height: 18px;
}

.bmi-scale-bar span {
    height: 100%;
}

.bmi-scale-seg-under { background: #a8d1f0; flex: 18.5; }
.bmi-scale-seg-normal { background: #a4d468; flex: 6.5; }
.bmi-scale-seg-over { background: #f5c86e; flex: 5; }
.bmi-scale-seg-obese { background: #e88a7d; flex: 10; }

.bmi-scale-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--color-text-light);
    margin-top: 0.3rem;
    padding: 0 0.15rem;
}

.bmi-scale-pointer {
    position: absolute;
    top: -6px;
    width: 3px;
    height: 30px;
    background: var(--color-primary-dark);
    border-radius: 2px;
    transition: left 0.4s ease;
    display: none;
}

.bmi-scale-pointer.is-visible {
    display: block;
}

/* Comparison */
.bmi-compare {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-top: 1rem;
}

.bmi-compare-item {
    border: 1px solid rgba(31, 61, 15, 0.1);
    border-radius: 14px;
    padding: 0.85rem;
    background: #fbfdf8;
    text-align: center;
}

.bmi-compare-item h4 {
    margin: 0 0 0.25rem;
    font-size: 0.9rem;
    color: var(--color-primary-dark);
}

.bmi-compare-item .bmi-compare-val {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

.bmi-compare-item .bmi-compare-note {
    font-size: 0.82rem;
    color: var(--color-text-light);
    margin: 0.15rem 0 0;
}

/* Info section */
.bmi-info h2 {
    margin: 0 0 0.75rem;
    font-size: 1.3rem;
    color: var(--color-primary-dark);
}

.bmi-info h3 {
    margin: 1rem 0 0.4rem;
    font-size: 1.05rem;
    color: #2f4b12;
}

.bmi-info p,
.bmi-info li {
    color: var(--color-text-light);
    line-height: 1.7;
}

.bmi-info ul {
    margin: 0;
    padding-left: 1.2rem;
}

.bmi-info ul li + li {
    margin-top: 0.25rem;
}

.bmi-note {
    margin-top: 0.85rem;
    padding: 0.85rem 1rem;
    border-left: 4px solid #89ac51;
    background: #f6faef;
    border-radius: 8px;
    color: #405236;
    line-height: 1.7;
}

.bmi-formula {
    margin-top: 0.65rem;
    padding: 0.85rem 1rem;
    background: #f5f8f0;
    border: 1px solid rgba(31, 61, 15, 0.1);
    border-radius: 12px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 1rem;
    color: #2f4b12;
    text-align: center;
}

.bmi-category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.6rem;
    margin-top: 0.65rem;
}

.bmi-cat {
    border-radius: 12px;
    padding: 0.75rem;
    text-align: center;
}

.bmi-cat h4 {
    margin: 0 0 0.2rem;
    font-size: 0.9rem;
}

.bmi-cat p {
    margin: 0;
    font-size: 0.85rem;
    font-weight: 600;
}

.bmi-cat-under { background: #e1f0fa; color: #2b6da4; }
.bmi-cat-normal { background: #e4f3d8; color: #38620f; }
.bmi-cat-over { background: #ffeecf; color: #8a5b18; }
.bmi-cat-obese { background: #fde1e1; color: #9b2d2d; }

.bmi-back {
    margin-top: 1rem;
}

.bmi-back .btn {
    width: 100%;
    text-align: center;
}

/* Responsive */
@media (max-width: 600px) {
    .bmi-hero {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .bmi-shell {
        width: calc(100% - 1rem);
    }

    .bmi-form {
        grid-template-columns: 1fr;
    }

    .bmi-category-grid {
        grid-template-columns: 1fr 1fr;
    }

    .bmi-compare {
        grid-template-columns: 1fr;
    }

    .bmi-card {
        padding: 1rem;
        border-radius: 16px;
    }

    .bmi-intro h1 {
        font-size: 1.6rem;
    }
}