:root {
    --hero-bg:        #1c3a28;
    --hero-card-bg:   #112219;
    --accent:         #7dc242;
    --accent-hover:   #6aaa34;
    --accent-dark:    #0f2118;
    --cream:          #f4ede0;
    --cream-border:   #e8ddc8;
    --white:          #ffffff;
    --text-on-dark:   rgba(255,255,255,0.92);
    --text-muted-dark:rgba(255,255,255,0.52);
    --border-dark:    rgba(255,255,255,0.11);
    --input-bg:       rgba(255,255,255,0.07);
    --input-border:   rgba(255,255,255,0.14);
    --text-dark:      #1a1a1a;
    --text-muted:     #6b7280;
    --col-under:      #60a5fa;
    --col-normal:     #4ade80;
    --col-over:       #fbbf24;
    --col-obese:      #f87171;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', sans-serif;
    background: var(--cream);
    color: var(--text-dark);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ─── PROMO SLOTS ─── */
.promo-container {
    background: var(--white);
    border-top: 1px solid var(--cream-border);
    border-bottom: 1px solid var(--cream-border);
    padding: 1.5rem 2rem;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.promo-container--top {
    background: var(--hero-bg);
    border-color: rgba(255,255,255,0.08);
}

.promo-container--top .promo-card {
    border-color: rgba(255,255,255,0.08);
}

/* Ensure promo cards are never hidden by ad blockers */
.promo-card,
.promo-card-inner,
.promo-card-content,
.promo-card-visual {
    display: block;
}

.promo-card-inner {
    display: grid !important;
}

@media (max-width: 700px) {
    .promo-card-inner {
        display: grid !important;
        grid-template-columns:1fr !important;
    }
}

/* ─── PROMO SLIDER ─── */
.promo-slider {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
}

.promo-slider-track {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.promo-slide {
    min-width: 100%;
    flex-shrink: 0;
}

.promo-slider-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 1rem 0 0.5rem;
}

.promo-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.2);
    cursor: pointer;
    padding: 0;
    transition: all 0.3s;
}

.promo-dot.active {
    background: var(--ad-accent, var(--accent));
    transform: scale(1.3);
}

.promo-dot:hover {
    background: rgba(255,255,255,0.4);
}
}

.promo-slot {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.04);
    border: 1px dashed rgba(0,0,0,0.12);
    border-radius: 6px;
    min-height: 90px;
    width: 100%;
}

.promo-container--top .promo-slot {
    background: rgba(255,255,255,0.04);
    border-color: rgba(255,255,255,0.1);
}

.promo-slot--leaderboard {
    max-width: 728px;
}

.promo-label {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    opacity: 0.5;
}

.promo-container--top .promo-label { color: rgba(255,255,255,0.3); }

/* ─── HERO ─── */
.hero {
    background: var(--hero-bg);
    padding: 4rem 2rem 5rem;
}

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 4rem;
    align-items: start;
}

/* Hero Left */
.hero-title {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(5rem, 5vw, 400px);
    line-height: 1.05;
    color: var(--white);
    margin-bottom: 2rem;
    font-weight: 400;
    max-width: 100%;
    overflow-wrap: break-word;
    word-break: break-word;
}

/* Form Card */
.bmi-form {
    background: rgba(0,0,0,0.22);
    border: 1px solid var(--border-dark);
    border-radius: 20px;
    padding: 1.75rem;
}

/* Unit Toggle */
.unit-toggle {
    display: inline-flex;
    background: rgba(255,255,255,0.07);
    border: 1px solid var(--border-dark);
    border-radius: 50px;
    padding: 3px;
    margin-bottom: 1.5rem;
    gap: 3px;
}

.unit-toggle label {
    padding: 8px 22px;
    border-radius: 50px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255,255,255,0.55);
    transition: all 0.2s;
    user-select: none;
}

.unit-toggle label:has(input:checked) {
    background: var(--white);
    color: var(--hero-bg);
    font-weight: 600;
}

.unit-toggle input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 0;
    height: 0;
}

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

.form-field {
    margin-bottom: 1rem;
}

.form-field label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: rgba(255,255,255,0.58);
    margin-bottom: 0.5rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.form-field input[type="number"] {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 12px;
    padding: 12px 16px;
    color: var(--white);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s, background 0.2s;
    -moz-appearance: textfield;
}

.form-field input[type="number"]::-webkit-inner-spin-button,
.form-field input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; }

.form-field input[type="number"]:focus {
    border-color: var(--accent);
    background: rgba(255,255,255,0.1);
}

.form-field input[type="number"]::placeholder {
    color: rgba(255,255,255,0.28);
}

.height-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.unit-inputs.hidden { display: none; }

.field-error {
    display: block;
    font-size: 0.75rem;
    color: #f87171;
    margin-top: 0.375rem;
    font-weight: 500;
}

.form-errors {
    background: rgba(239,68,68,0.12);
    border: 1px solid rgba(239,68,68,0.28);
    border-radius: 10px;
    padding: 12px 16px;
    margin-bottom: 1rem;
}

.form-errors p {
    font-size: 0.8125rem;
    color: #f87171;
    margin-bottom: 0.25rem;
}
.form-errors p:last-child { margin-bottom: 0; }

.btn-calculate {
    width: 100%;
    padding: 14px 24px;
    background: var(--accent);
    color: var(--accent-dark);
    border: none;
    border-radius: 50px;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    letter-spacing: 0.01em;
    margin-top: 0.25rem;
}

.btn-calculate:hover { background: var(--accent-hover); }
.btn-calculate:active { transform: scale(0.98); }
.btn-calculate:disabled { opacity: 0.55; cursor: not-allowed; }

.live-preview {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--accent);
    margin-top: 0.6rem;
    min-height: 1.25rem;
    font-weight: 500;
}

/* Result Advice */
.result-advice {
    margin-top: 1.5rem;
    padding: 1.25rem 1.5rem;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--border-dark);
    border-radius: 16px;
}

.advice-desc {
    font-size: 0.9375rem;
    color: var(--text-on-dark);
    line-height: 1.6;
    margin-bottom: 0.6rem;
}

.advice-text {
    font-size: 0.875rem;
    color: var(--text-muted-dark);
    line-height: 1.6;
}

.advice-text strong {
    color: rgba(255,255,255,0.75);
    font-weight: 600;
}

.age-note {
    margin-top: 0.875rem;
    padding: 10px 14px;
    background: rgba(96,165,250,0.1);
    border: 1px solid rgba(96,165,250,0.22);
    border-radius: 10px;
    font-size: 0.8125rem;
    color: #93c5fd;
    line-height: 1.55;
}

/* ─── RESULT PANEL ─── */
.hero-result-side {
    display: flex;
    justify-content: center;
}

.result-panel {
    background: var(--hero-card-bg);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 24px;
    padding: 2.25rem 2rem;
    width: 100%;
    text-align: center;
}

.result-panel-title {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.38);
    margin-bottom: 1.75rem;
}

/* Donut Ring */
.bmi-ring-wrap {
    width: 168px;
    height: 168px;
    border-radius: 50%;
    background: conic-gradient(
        var(--col-under)  0deg   72deg,
        var(--col-normal) 72deg  169.2deg,
        var(--col-over)   169.2deg 248.4deg,
        var(--col-obese)  248.4deg 360deg
    );
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.bmi-ring-inner {
    width: 126px;
    height: 126px;
    border-radius: 50%;
    background: var(--hero-card-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.bmi-value {
    font-size: 2.6rem;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.03em;
    transition: none;
}

body.loaded .bmi-value {
    transition: color 0.4s;
}

.bmi-value-sub {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.35);
    margin-top: 0.2rem;
}

/* Category Badge */
.category-badge {
    display: inline-block;
    padding: 5px 18px;
    border-radius: 50px;
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    background: rgba(255,255,255,0.07);
    color: rgba(255,255,255,0.45);
    border: 1px solid var(--border-dark);
    transition: none;
}

body.loaded .category-badge {
    transition: all 0.3s;
}

/* Scale Bar */
.bmi-scale {
    margin: 0 0 1.5rem;
    text-align: left;
}

.scale-bar {
    position: relative;
    height: 7px;
    border-radius: 50px;
    background: linear-gradient(
        to right,
        var(--col-under)  0%   20%,
        var(--col-normal) 20%  47%,
        var(--col-over)   47%  69%,
        var(--col-obese)  69%  100%
    );
    margin-bottom: 9px;
    overflow: visible;
}

.scale-pointer {
    position: absolute;
    top: 50%;
    width: 15px;
    height: 15px;
    background: var(--white);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 0 3px rgba(255,255,255,0.22);
    transition: none;
}

body.loaded .scale-pointer {
    transition: left 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94), opacity 0.3s;
}

.scale-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.65rem;
    color: rgba(255,255,255,0.35);
    font-weight: 500;
}

/* Result Meta */
.result-meta {
    border-top: 1px solid rgba(255,255,255,0.07);
    padding-top: 1.25rem;
    text-align: left;
    margin-bottom: 1rem;
}

.result-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.75rem;
}

.rml {
    font-size: 0.8125rem;
    color: rgba(255,255,255,0.45);
    white-space: nowrap;
}

.rmv {
    font-size: 0.875rem;
    color: var(--white);
    font-weight: 600;
    text-align: right;
}

.rmv small {
    display: block;
    font-size: 0.72rem;
    font-weight: 400;
    color: rgba(255,255,255,0.4);
    margin-top: 2px;
}

.disclaimer-box {
    font-size: 0.72rem;
    color: rgba(255,255,255,0.3);
    line-height: 1.55;
    text-align: left;
    margin-bottom: 1.25rem;
    padding: 10px 14px;
    background: rgba(255,255,255,0.03);
    border-radius: 10px;
    border: 1px solid var(--border-dark);
}

.btn-recalc {
    display: block;
    width: 100%;
    padding: 11px 20px;
    border: 1.5px solid rgba(255,255,255,0.18);
    border-radius: 50px;
    color: rgba(255,255,255,0.7);
    font-family: 'Inter', sans-serif;
    font-size: 0.875rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s, background 0.2s;
    background: transparent;
}

.btn-recalc:hover {
    border-color: rgba(255,255,255,0.4);
    color: var(--white);
    background: rgba(255,255,255,0.04);
}

/* ─── WHAT IS BMI SECTION ─── */
.info-sections {
    background: var(--cream);
    padding: 4rem 2rem;
}

.info-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.bmi-explainer {
    background: var(--white);
    border-radius: 24px;
    border: 1px solid var(--cream-border);
    padding: 3rem;
}

.bmi-explainer h2 {
    font-family: 'DM Serif Display', serif;
    font-size: 2rem;
    font-weight: 400;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.bmi-explainer > p {
    font-size: 0.9375rem;
    color: var(--text-muted);
    line-height: 1.72;
    max-width: 660px;
    margin-bottom: 2rem;
    overflow-wrap: break-word;
}

.bmi-table {
    width: 100%;
    border-collapse: collapse;
    max-width: 560px;
}

.bmi-explainer {
    overflow-x: auto;
}

.bmi-table th {
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.625rem 1rem;
    border-bottom: 2px solid var(--cream-border);
}

.bmi-table td {
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    border-bottom: 1px solid #f3f4f6;
    color: var(--text-dark);
}

.bmi-table tr:last-child td { border-bottom: none; }

.category-dot {
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    margin-right: 0.5rem;
    vertical-align: middle;
}

/* ─── FOOTER — Big Text ─── */
.site-footer {
    background: var(--hero-bg);
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.footer-big-text {
    font-family: 'DM Serif Display', serif;
    font-size: clamp(5rem, 22vw, 400px);
    font-weight: 400;
    color: rgba(255,255,255,0.07);
    line-height: 1;
    white-space: nowrap;
    letter-spacing: -0.03em;
    user-select: none;
    pointer-events: none;
    text-align: center;
    max-width: 100%;
}

/* ─── MODERN AD ─── */
.promo-card {
    background: var(--ad-bg, rgba(255,255,255,0.05));
    border: 1px solid var(--border-dark);
    border-radius: 20px;
    padding: 1rem 2rem;
    margin:0 auto;
    max-width: 100%;
    transition: border-color 0.3s, background 0.3s;
}

.promo-card:hover {
    border-color: rgba(255,255,255,0.18);
    background: rgba(255,255,255,0.07);
}

.promo-card-inner {
    display: grid;
    grid-template-columns: 1fr 200px;
    gap: 2rem;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

.promo-card-content {
    text-align: left;
}

.promo-card-badge {
    display: inline-block;
    font-size:0.68rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ad-accent, var(--accent));
    background: rgba(125,194,66,0.1);
    padding: 3px 10px;
    border-radius: 50px;
    margin-bottom: 0.75rem;
}

.promo-card-title {
    font-family: 'DM Serif Display', serif;
    font-size: 1.75rem;
    color: var(--white);
    font-weight: 400;
    margin-bottom: 0.375rem;
    line-height: 1.2;
}

.promo-card-tagline {
    font-size: 0.875rem;
    color: var(--text-muted-dark);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.promo-card-desc {
    font-size: 0.875rem;
    color: var(--text-on-dark);
    line-height: 1.65;
    margin-bottom: 1rem;
}

.promo-card-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.promo-card-feature {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--ad-accent, var(--accent));
    background: rgba(125,194,66,0.08);
    padding: 4px 12px;
    border-radius: 50px;
    border: 1px solid rgba(125,194,66,0.15);
}

.promo-card-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 22px;
    background: var(--ad-accent, var(--accent));
    color: var(--accent-dark);
    border-radius: 50px;
    font-family: 'Inter', sans-serif;
    font-size: 0.875rem;
    font-weight: 700;
    text-decoration: none;
    transition: opacity 0.2s, transform 0.1s;
}

.promo-card-btn:hover {
    opacity: 0.88;
    transform: translateY(-1px);
}

.promo-card-btn svg {
    flex-shrink: 0;
}

.promo-card-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.promo-card-logo-wrap {
    width: 140px;
    height: 140px;
    background: rgba(255,255,255,0.06);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255,255,255,0.08);
    position: relative;
    z-index: 1;
    padding: 1rem;
}

.promo-card-logo {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.promo-card-visual-bg {
    position: absolute;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: var(--ad-accent, var(--accent));
    opacity: 0.06;
    filter: blur(40px);
}

@media (max-width: 700px) {
    .promo-card-inner {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .promo-card-visual {
        order: -1;
    }
    .promo-card-logo-wrap {
        width: 100px;
        height: 100px;
    }
    .promo-card { padding: 1.75rem 1.25rem; }
    .promo-card-title { font-size: 1.375rem; }
}

.modern-ad:hover {
    border-color: rgba(255,255,255,0.18);
    background: rgba(255,255,255,0.07);
}

.modern-ad-inner {
    display: grid;
    grid-template-columns: 1fr 200px;
    gap: 2rem;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

.modern-ad-content {
    text-align: left;
}

.modern-ad-badge {
    display: inline-block;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ad-accent, var(--accent));
    background: rgba(125,194,66,0.1);
    padding: 3px 10px;
    border-radius: 50px;
    margin-bottom: 0.75rem;
}

.modern-ad-title {
    font-family: 'DM Serif Display', serif;
    font-size: 1.75rem;
    color: var(--white);
    font-weight: 400;
    margin-bottom: 0.375rem;
    line-height: 1.2;
}

.modern-ad-tagline {
    font-size: 0.875rem;
    color: var(--text-muted-dark);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.modern-ad-desc {
    font-size: 0.875rem;
    color: var(--text-on-dark);
    line-height: 1.65;
    margin-bottom: 1rem;
}

.modern-ad-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.modern-ad-feature {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--ad-accent, var(--accent));
    background: rgba(125,194,66,0.08);
    padding: 4px 12px;
    border-radius: 50px;
    border: 1px solid rgba(125,194,66,0.15);
}

.modern-ad-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 22px;
    background: var(--ad-accent, var(--accent));
    color: var(--accent-dark);
    border-radius: 50px;
    font-family: 'Inter', sans-serif;
    font-size: 0.875rem;
    font-weight: 700;
    text-decoration: none;
    transition: opacity 0.2s, transform 0.1s;
}

.modern-ad-btn:hover {
    opacity: 0.88;
    transform: translateY(-1px);
}

.modern-ad-btn svg {
    flex-shrink: 0;
}

.modern-ad-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.modern-ad-logo-wrap {
    width: 140px;
    height: 140px;
    background: rgba(255,255,255,0.06);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255,255,255,0.08);
    position: relative;
    z-index: 1;
    padding: 1rem;
}

.modern-ad-logo {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.modern-ad-visual-bg {
    position: absolute;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: var(--ad-accent, var(--accent));
    opacity: 0.06;
    filter: blur(40px);
}

@media (max-width: 700px) {
    .modern-ad-inner {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .modern-ad-visual {
        order: -1;
    }
    .modern-ad-logo-wrap {
        width: 100px;
        height: 100px;
    }
    .modern-ad { padding: 1.75rem 1.25rem; }
    .modern-ad-title { font-size: 1.375rem; }
}

/* ─── RESPONSIVE ─── */
@media (max-width: 960px) {
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    .hero-result-side { justify-content: flex-start; }
    .result-panel { max-width: 440px; }
}

@media (max-width: 600px) {
    .hero { padding: 2.5rem 1.25rem 3rem; }
    .hero-title { margin-bottom: 1.5rem; }
    .form-grid { grid-template-columns: 1fr; }
    .info-sections { padding: 2.5rem 1.25rem; }
    .bmi-explainer { padding: 1.75rem 1.25rem; }
    .result-panel { padding: 1.75rem 1.25rem; }
    .bmi-ring-wrap { width: 148px; height: 148px; }
    .bmi-ring-inner { width: 110px; height: 110px; }
    .bmi-value { font-size: 2.2rem; }
    .ad-container { padding: 0.75rem 1.25rem; }
    .footer-big-text { font-size: clamp(3rem, 22vw, 10rem); }
}