/* =========================================================
   143TOOL - BMI Calculator Styles
   Version: 1.1.0
   ========================================================= */

.bmi-card {
    padding: 30px;
    max-width: 720px;
    margin: 0 auto;
}

/* ---------- UNIT TOGGLE (3 options) ---------- */
.bmi-units {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 5px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 26px;
}

.bmi-unit {
    flex: 1 1 auto;
    min-width: 140px;
    padding: 11px 12px;
    border: 0;
    background: transparent;
    color: var(--text-muted);
    font-weight: 700;
    font-size: 13px;
    border-radius: var(--radius-sm);
    transition: background .2s ease, color .2s ease;
    text-align: center;
    line-height: 1.35;
}

.bmi-unit small {
    display: block;
    font-weight: 500;
    font-size: 11px;
    opacity: .85;
    margin-top: 2px;
}

.bmi-unit:hover {
    color: var(--text);
    background: color-mix(in srgb, var(--primary) 6%, transparent);
}

.bmi-unit.active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    box-shadow: 0 4px 14px rgba(233, 30, 99, .22);
}

/* ---------- INPUTS ---------- */
.bmi-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    align-items: start;
}

.bmi-inputs .form-group {
    margin-bottom: 0;
}

.bmi-inputs label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 14px;
}

.bmi-unit-label {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 13px;
}

.bmi-inputs input {
    width: 100%;
    padding: 13px 15px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--body-bg);
    color: var(--text);
    font-size: 17px;
    font-weight: 600;
    transition: border-color .2s ease, box-shadow .2s ease;
}

.bmi-inputs input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent);
}

.bmi-inputs input::-webkit-outer-spin-button,
.bmi-inputs input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.bmi-inputs input[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
}

/* Feet + inches dual field */
.bmi-ft-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.bmi-ft-field {
    position: relative;
}

.bmi-ft-field input {
    padding-right: 36px;
    text-align: center;
}

.bmi-ft-suffix {
    position: absolute;
    right: 13px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 700;
    pointer-events: none;
}

/* ---------- INFO NOTE ---------- */
.bmi-optional {
    margin-top: 18px;
}

.bmi-optional-note {
    margin: 0;
    padding: 12px 15px;
    background: color-mix(in srgb, #f59e0b 8%, transparent);
    border: 1px solid color-mix(in srgb, #f59e0b 25%, var(--border));
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.6;
}

/* ---------- ACTIONS ---------- */
.bmi-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 20px;
}

/* ---------- ERROR ---------- */
.bmi-error {
    margin-top: 20px;
    padding: 12px 15px;
    background: color-mix(in srgb, var(--danger) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--danger) 30%, var(--border));
    border-radius: var(--radius-sm);
    color: var(--danger);
    font-size: 14px;
    font-weight: 600;
}

/* ---------- RESULT ---------- */
.bmi-result {
    margin-top: 28px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
    animation: bmiFade .3s ease;
}

@keyframes bmiFade {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.bmi-score-wrap { text-align: center; margin-bottom: 26px; }

.bmi-score-label {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .6px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.bmi-score {
    font-size: 62px;
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.bmi-category {
    display: inline-block;
    margin-top: 12px;
    padding: 7px 18px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: .3px;
    background: var(--surface-2);
    color: var(--text);
    border: 1px solid var(--border);
    transition: background .25s ease, color .25s ease, border-color .25s ease;
}

.bmi-category.cat-under {
    background: color-mix(in srgb, #3b82f6 14%, transparent);
    color: #3b82f6;
    border-color: color-mix(in srgb, #3b82f6 35%, var(--border));
}
.bmi-category.cat-normal {
    background: color-mix(in srgb, #10b981 14%, transparent);
    color: #10b981;
    border-color: color-mix(in srgb, #10b981 35%, var(--border));
}
.bmi-category.cat-over {
    background: color-mix(in srgb, #f59e0b 14%, transparent);
    color: #f59e0b;
    border-color: color-mix(in srgb, #f59e0b 35%, var(--border));
}
.bmi-category.cat-obese {
    background: color-mix(in srgb, #ef4444 14%, transparent);
    color: #ef4444;
    border-color: color-mix(in srgb, #ef4444 35%, var(--border));
}

/* ---------- SCALE ---------- */
.bmi-scale { margin-bottom: 26px; }

.bmi-scale-bar {
    position: relative;
    display: flex;
    height: 14px;
    border-radius: 999px;
    overflow: visible;
    border: 1px solid var(--border);
    background: var(--surface-2);
}

.bmi-scale-seg { height: 100%; }
.bmi-scale-seg:first-child {
    border-top-left-radius: 999px;
    border-bottom-left-radius: 999px;
}
.bmi-scale-seg:last-child {
    border-top-right-radius: 999px;
    border-bottom-right-radius: 999px;
}

.seg-under  { flex: 18.5; background: #3b82f6; opacity: .85; }
.seg-normal { flex: 6.5;  background: #10b981; opacity: .85; }
.seg-over   { flex: 5;    background: #f59e0b; opacity: .85; }
.seg-obese  { flex: 10;   background: #ef4444; opacity: .85; }

.bmi-scale-pointer {
    position: absolute;
    top: -8px;
    left: 0;
    width: 4px;
    height: 30px;
    background: var(--text);
    border-radius: 2px;
    box-shadow: 0 0 0 3px var(--surface), 0 0 0 4px var(--text);
    transform: translateX(-50%);
    transition: left .45s cubic-bezier(.22,.85,.35,1);
}

.bmi-scale-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
    padding: 0 2px;
}

.bmi-scale-cats {
    display: flex;
    justify-content: space-between;
    margin-top: 4px;
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .4px;
}

/* ---------- HEALTHY RANGE ---------- */
.bmi-range {
    padding: 16px 18px;
    background: color-mix(in srgb, var(--primary) 8%, transparent);
    border: 1px solid color-mix(in srgb, var(--primary) 20%, var(--border));
    border-radius: var(--radius-md);
    text-align: center;
    margin-bottom: 20px;
}

.bmi-range-title {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .5px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.bmi-range-value {
    font-size: 20px;
    font-weight: 800;
    color: var(--text);
}

/* ---------- DETAILS ---------- */
.bmi-details { display: grid; gap: 8px; }

.bmi-detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 11px 15px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
}

.bmi-detail-label { color: var(--text-muted); font-weight: 600; }
.bmi-detail-value {
    font-weight: 700;
    color: var(--text);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 13px;
    text-align: right;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 620px) {
    .bmi-card { padding: 20px; }
    .bmi-inputs { grid-template-columns: 1fr; }
    .bmi-score { font-size: 52px; }
    .bmi-actions .btn { flex: 1; }
    .bmi-scale-cats { font-size: 10px; }
    .bmi-detail-item { font-size: 13px; }
    .bmi-detail-value { font-size: 12px; }
    .bmi-unit { min-width: 0; }
}
/* =========================================================
   SEO ARTICLE / ADSENSE CONTENT
   ========================================================= */

.tool-article {
    max-width: 800px;
    margin: 60px auto 40px;
    padding: 30px 0;
    border-top: 1px solid var(--border);
}

.tool-article h2 {
    font-size: 24px;
    font-weight: 800;
    color: var(--text);
    margin: 36px 0 14px;
    line-height: 1.3;
    letter-spacing: -.4px;
}

.tool-article h2:first-child {
    margin-top: 0;
}

.tool-article h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin: 24px 0 10px;
    line-height: 1.4;
}

.tool-article p {
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-muted);
    margin: 0 0 16px;
}

.tool-article ul,
.tool-article ol {
    padding-left: 22px;
    margin: 0 0 18px;
}

.tool-article li {
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.tool-article strong {
    color: var(--text);
    font-weight: 700;
}

.tool-article a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: color .15s ease;
}

.tool-article a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

@media (max-width: 620px) {
    .tool-article {
        padding: 20px 0;
        margin: 40px auto 20px;
    }
    .tool-article h2 {
        font-size: 20px;
        margin: 28px 0 12px;
    }
    .tool-article h3 {
        font-size: 16px;
        margin: 20px 0 8px;
    }
    .tool-article p,
    .tool-article li {
        font-size: 15px;
        line-height: 1.7;
    }
}