/* ═══════════════════════════════════════════════
   BMI WHO Standards — v5.0
   ═══════════════════════════════════════════════ */

:root {
    --bmi-primary:              #330066;
    --bmi-primary-light:        #4a0099;
    --bmi-bg:                   #F8F7FA;
    --bmi-white:                #FFFFFF;
    --bmi-gray:                 #E5E7EB;
    --bmi-text:                 #1F2937;
    --bmi-text-light:           #6B7280;
    --bmi-capsule-inactive:     #EAE6F2;
    /* Dedicated left panel bg — defaults to primary, overridable from widget */
    --bmi-left-bg:              var(--bmi-primary);
    /* Change #1: Dedicated tokens for every hover state — all widget-controllable */
    --bmi-btn-hover-bg:         var(--bmi-primary-light);
    --bmi-btn-hover-color:      #ffffff;
    --bmi-close-hover-bg:       var(--bmi-gray);
    --bmi-close-hover-color:    var(--bmi-text-light);
    --bmi-outline-bg:           transparent;
    --bmi-outline-color:        var(--bmi-primary);
    --bmi-outline-border:       var(--bmi-primary);
    --bmi-outline-hover-bg:     var(--bmi-primary);
    --bmi-outline-hover-color:  #ffffff;
    --bmi-outline-hover-border: var(--bmi-primary);
}

/* ── Container ─────────────────────────────────── */
.bmi-app-container {
    font-family: 'Inter', sans-serif;
    color: var(--bmi-text);
    max-width: 1000px;
    margin: 0 auto;
    overflow: hidden;
    position: relative;
    border-radius: 24px;
    background: var(--bmi-bg);
}

/* ── Screens ───────────────────────────────────── */
.bmi-screen {
    display: none;
    min-height: 580px;
}
.bmi-screen.active {
    display: grid;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════════
   SCREEN 1 — Split Layout
   ═══════════════════════════════════════════════ */
#bmi-screen-1 {
    grid-template-columns: 1fr 1fr;
}

/* Left Panel */
.bmi-split-left {
    background-color: var(--bmi-left-bg);
    position: relative;
    padding: 50px 36px 50px 36px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    border-radius: 20px;
    min-height: 580px;
}

.bmi-hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    border-radius: 20px;
}

/* Change #3: Background video styles */
.bmi-bg-video {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    border-radius: 20px;
}
.bmi-bg-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.bmi-hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    opacity: 0.55;
    mix-blend-mode: overlay;
}

.bmi-content-wrap {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.bmi-main-title {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.15;
    color: #fff;
    margin: 0 0 auto 0;
}

/* Item 5: Subheading & Description */
.bmi-subheading {
    font-size: 15px;
    font-weight: 600;
    color: rgba(255,255,255,0.8);
    margin: 0 0 10px 0;
    letter-spacing: 0.02em;
}
.bmi-left-description {
    font-size: 14px;
    line-height: 1.6;
    color: rgba(255,255,255,0.75);
    margin: 0 0 12px 0;
}

/* Glass weight box */
.bmi-glass-box {
    background: rgba(255,255,255,0.18);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.28);
    padding: 20px 24px;
    border-radius: 16px;
    margin-top: auto;
}

.bmi-starting-label {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 4px;
}

.bmi-weight-display {
    font-size: 48px;
    font-weight: 900;
    color: #fff;
    line-height: 1;
    margin-bottom: 16px;
}

/* Slider — Change #9: height and colors now CSS-variable driven and JS-injectable */
.bmi-slider {
    width: 100%;
    height: 6px;           /* default; overridden by JS via applySliderStyles */
    background: rgba(255,255,255,0.3);
    border-radius: 50px;
    appearance: none;
    -webkit-appearance: none;
    outline: none;
    cursor: pointer;
    transition: height 0.2s;
}
.bmi-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    background: #fff;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}
.bmi-slider::-moz-range-thumb {
    width: 22px;
    height: 22px;
    background: #fff;
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}

/* Right Panel */
.bmi-split-right {
    padding: 50px 40px;
    background: var(--bmi-white);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.bmi-engagement-title {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.15;
    color: var(--bmi-primary);
    margin: 0 0 32px 0;
}

/* Capsules */
.bmi-capsules-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    height: 200px;
    margin-bottom: 28px;
}

.bmi-capsule-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
}

.bmi-capsule-bar {
    width: 100%;
    flex: 1;
    background: var(--bmi-capsule-inactive);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}

/* Change #7: Fill animates from current position — no reset in CSS
   transition is set dynamically in JS using configurable duration (#6) */
.bmi-capsule-fill {
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background: var(--bmi-primary);
    border-radius: 20px;
    /* NOTE: transition is applied via JS to allow configurable duration */
}

/* Wave ripple on the right edge of fill */
.bmi-capsule-fill::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -6px;
    width: 12px;
    height: 200%;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.bmi-capsule-fill.filling::after {
    opacity: 1;
    animation: bmi-wave 1.8s ease-in-out infinite;
}

@keyframes bmi-wave {
    0%   { transform: translateY(0)    scaleX(1);   }
    50%  { transform: translateY(10px) scaleX(1.5); }
    100% { transform: translateY(0)    scaleX(1);   }
}

.bmi-capsule-label {
    font-size: 11px;
    font-weight: 600;
    margin-top: 8px;
    color: var(--bmi-text-light);
    letter-spacing: 0.2px;
    flex-shrink: 0;
}

/* Input blocks */
.bmi-inputs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.bmi-input-block {
    background: var(--bmi-bg);
    border: 1.5px solid var(--bmi-gray);
    border-radius: 14px;
    padding: 14px 18px;
    transition: border-color 0.2s;
}

.bmi-input-block:focus-within {
    border-color: var(--bmi-primary);
}

.bmi-input-block-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--bmi-text-light);
    margin-bottom: 6px;
    display: block;
}

.bmi-input-inline {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.bmi-unit-text {
    font-size: 22px;
    font-weight: 800;
    color: var(--bmi-text);
}

.bmi-inline-input {
    font-size: 18px;
    font-weight: 700;
    color: var(--bmi-text);
    background: transparent;
    border: none;
    outline: none;
    width: 60px;
    padding: 0;
}

.bmi-inline-input::placeholder {
    color: var(--bmi-gray);
}


/* ═══════════════════════════════════════════════
   SCREEN 2 — Projected Weight Loss (Floating Modal)
   ═══════════════════════════════════════════════ */
#bmi-screen-2-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: transparent;
    z-index: 99998;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

#bmi-screen-2-modal.active {
    display: flex;
}

#bmi-screen-2-modal .bmi-s2-card {
    background: var(--bmi-white);
    width: 100%;
    max-width: 960px;
    border-radius: 28px;
    padding: 48px 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    animation: modalIn 0.35s cubic-bezier(0.16,1,0.3,1);
    max-height: 92vh;
    overflow-y: auto;
}

.bmi-proj-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--bmi-bg);
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--bmi-text-light);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
    z-index: 10;
}
.bmi-proj-close:hover {
    background: var(--bmi-close-hover-bg);
    color: var(--bmi-close-hover-color);
}

/* Left */
.bmi-proj-title {
    font-size: 42px;
    font-weight: 900;
    line-height: 1.1;
    color: var(--bmi-text);
    margin: 0 0 28px 0;
}

.bmi-lose-up-to {
    font-size: 14px;
    font-weight: 700;
    color: var(--bmi-text-light);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.bmi-lose-percent {
    font-size: 80px;
    font-weight: 900;
    line-height: 1;
    color: var(--bmi-text);
    margin-bottom: 24px;
}

.bmi-clinical-main {
    font-size: 15px;
    font-weight: 700;
    color: var(--bmi-text);
    line-height: 1.6;
    margin-bottom: 12px;
}

.bmi-clinical-disclaimer {
    font-size: 12px;
    color: var(--bmi-text-light);
    line-height: 1.6;
    margin-bottom: 32px;
}

.bmi-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--bmi-primary);
    color: #fff;
    padding: 16px 28px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 15px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: background 0.3s, color 0.3s, border-color 0.3s, box-shadow 0.3s;
    text-decoration: none;
}
.bmi-btn-primary:hover {
    background: var(--bmi-btn-hover-bg);
    color: var(--bmi-btn-hover-color);
}

.bmi-btn-arrow {
    width: 22px;
    height: 22px;
    background: rgba(255,255,255,0.25);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
}

/* Right — Radial Chart */
.bmi-radial-wrap {
    position: relative;
    width: 100%;
    max-width: 340px;
    aspect-ratio: 1;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bmi-radial-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
    overflow: visible;
}

.bmi-radial-center {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-bottom: 40px;
}

.bmi-radial-you-lose {
    font-size: 12px;
    font-weight: 600;
    color: var(--bmi-text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.bmi-radial-loss-val {
    font-size: 44px;
    font-weight: 900;
    color: var(--bmi-text);
    line-height: 1;
}

/* Starting weight pill at bottom of radial */
.bmi-radial-starting {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bmi-primary);
    color: #fff;
    border-radius: 50px;
    padding: 10px 28px;
    text-align: center;
    white-space: nowrap;
}

.bmi-radial-starting-label {
    font-size: 11px;
    font-weight: 600;
    opacity: 0.8;
    display: block;
    margin-bottom: 2px;
}

.bmi-radial-starting-val {
    font-size: 20px;
    font-weight: 900;
}

/* ═══════════════════════════════════════════════
   BMI MODAL
   ═══════════════════════════════════════════════ */
.bmi-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 99999;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.bmi-modal.active {
    display: flex;
}

.bmi-modal-content {
    background: var(--bmi-white);
    width: 100%;
    max-width: 960px;
    border-radius: 28px;
    position: relative;
    padding: 48px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 52px;
    animation: modalIn 0.35s cubic-bezier(0.16,1,0.3,1);
    max-height: 92vh;
    overflow-y: auto;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.96); }
    to   { opacity: 1; transform: scale(1); }
}

.bmi-modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--bmi-bg);
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: var(--bmi-text-light);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
}
.bmi-modal-close:hover {
    background: var(--bmi-close-hover-bg);
    color: var(--bmi-close-hover-color);
}

/* Modal Left */
.bmi-modal-title {
    font-size: 38px;
    font-weight: 900;
    color: var(--bmi-text);
    margin: 0 0 20px 0;
}

.bmi-modal-subtitle {
    font-size: 15px;
    font-weight: 700;
    color: var(--bmi-text);
    line-height: 1.6;
    margin-bottom: 14px;
}

.bmi-modal-disclaimer {
    font-size: 12px;
    color: var(--bmi-text-light);
    line-height: 1.65;
    margin-bottom: 28px;
}

/* Modal form fields */
.bmi-field-section {
    margin-bottom: 22px;
}

.bmi-field-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--bmi-text);
    margin-bottom: 8px;
}

.bmi-field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.bmi-field-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.bmi-field-sublabel {
    font-size: 12px;
    font-weight: 600;
    color: var(--bmi-text-light);
}

.bmi-field-input {
    background: var(--bmi-bg);
    border: 1.5px solid var(--bmi-gray);
    border-radius: 10px;
    padding: 14px 16px;
    font-size: 16px;
    font-weight: 600;
    color: var(--bmi-text);
    outline: none;
    transition: border-color 0.2s;
    width: 100%;
    box-sizing: border-box;
}

.bmi-field-input:focus {
    border-color: var(--bmi-primary);
}

.bmi-field-input.invalid {
    border-color: #e53e3e;
    background: #fff5f5;
}

.bmi-field-input-full {
    width: 100%;
    box-sizing: border-box;
}

/* Modal buttons */
.bmi-modal-actions {
    display: flex;
    gap: 12px;
    margin-top: 8px;
    flex-wrap: wrap;
}

.bmi-btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--bmi-outline-bg);
    color: var(--bmi-outline-color);
    border: 2px solid var(--bmi-outline-border);
    padding: 14px 24px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
    text-decoration: none;
}
.bmi-btn-outline:hover {
    background: var(--bmi-outline-hover-bg);
    color: var(--bmi-outline-hover-color);
    border-color: var(--bmi-outline-hover-border);
}

/* Modal Right */
.bmi-modal-right {
    display: flex;
    flex-direction: column;
}

/* Modal capsules */
.bmi-modal-capsules {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    height: 240px;
    margin-bottom: 24px;
}

/* BMI result */
.bmi-result-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--bmi-text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.bmi-result-value {
    font-size: 64px;
    font-weight: 900;
    color: var(--bmi-text);
    line-height: 1;
    margin-bottom: 20px;
}

/* Legend table */
.bmi-legend-table {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.bmi-legend-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bmi-bg);
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--bmi-text);
    cursor: pointer;
    transition: background 0.25s, color 0.25s;
}

.bmi-legend-row span:last-child {
    color: var(--bmi-text-light);
    font-weight: 600;
}

.bmi-legend-row.active {
    background: var(--bmi-primary);
    color: #fff;
}

.bmi-legend-row.active span:last-child {
    color: rgba(255,255,255,0.85);
}

.bmi-legend-dot {
    width: 8px;
    height: 8px;
    background: #fff;
    border-radius: 50%;
    display: none;
    margin-right: 8px;
    flex-shrink: 0;
}

.bmi-legend-row.active .bmi-legend-dot {
    display: inline-block;
}

.bmi-legend-left {
    display: flex;
    align-items: center;
}

/* ═══════════════════════════════════════════════
   Calculating Overlay
   ═══════════════════════════════════════════════ */
.bmi-calculating-overlay {
    position: absolute;
    inset: 0;
    background: var(--bmi-primary);
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    border-radius: 24px;
}

.bmi-calculating-overlay.fade-out {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.bmi-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════════════════════════════════════════
   Responsive
   ═══════════════════════════════════════════════ */
@media (max-width: 900px) {
    #bmi-screen-1 { grid-template-columns: 1fr; }
    .bmi-split-left { min-height: 360px; }
    #bmi-screen-2-modal .bmi-s2-card { grid-template-columns: 1fr; padding: 32px 24px; gap: 32px; }
    .bmi-modal-content { grid-template-columns: 1fr; padding: 32px 20px; }
    .bmi-proj-title { font-size: 30px; }
    .bmi-lose-percent { font-size: 56px; }
}

@media (max-width: 600px) {
    .bmi-inputs-grid { grid-template-columns: 1fr; }
    .bmi-field-row { grid-template-columns: 1fr; }
    .bmi-modal-actions { flex-direction: column; }
    .bmi-capsules-row, .bmi-modal-capsules { height: 140px; }
}