/* ============================================================
   BRA SIZE CALCULATOR — CSS
   Matches CalcTechLab design system
   ============================================================ */

:root {
    --bra-primary:    #1e40af;
    --bra-secondary:  #3b82f6;
    --bra-accent:     #06b6d4;
    --bra-success:    #059669;
    --bra-warning:    #d97706;
    --bra-danger:     #dc2626;
    --bra-pink:       #db2777;
    --bra-pink-light: #fce7f3;
    --bra-pink-mid:   #fbcfe8;
    --bra-radius:     12px;
    --bra-radius-sm:  8px;
    --bra-shadow:     0 2px 8px rgba(0,0,0,0.08);
    --bra-shadow-md:  0 4px 16px rgba(0,0,0,0.12);
}

/* ============================================================
   WRAPPER
   ============================================================ */
.bra-wrapper {
    padding: 1.5rem;
}

/* ============================================================
   TABS
   ============================================================ */
.bra-tabs {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
    gap: 0.5rem;
    flex-wrap: wrap;
    border-bottom: 2px solid var(--border-color, #e2e8f0);
    padding-bottom: 0;
}

.bra-tab-item {
    margin-bottom: -2px;
}

.bra-tab-btn {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary, #64748b);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    border-radius: var(--bra-radius-sm) var(--bra-radius-sm) 0 0;
}

.bra-tab-btn:hover {
    color: var(--bra-primary);
    background: rgba(30, 64, 175, 0.05);
}

.bra-tab-btn.active {
    color: var(--bra-primary);
    border-bottom-color: var(--bra-primary);
    font-weight: 600;
}

.bra-tab-content {
    display: none;
}

.bra-tab-content.active {
    display: block;
}

/* ============================================================
   CARDS
   ============================================================ */
.bra-card {
    background: var(--bg-card, #fff);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: var(--bra-radius);
    overflow: hidden;
    box-shadow: var(--bra-shadow);
}

.bra-card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.1rem;
    background: var(--bg-secondary, #f8fafc);
    border-bottom: 1px solid var(--border-color, #e2e8f0);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary, #1e293b);
}

.bra-card-header i {
    color: var(--bra-primary);
    font-size: 0.95rem;
}

.bra-card-body {
    padding: 1.1rem;
}

/* ============================================================
   UNIT TOGGLE
   ============================================================ */
.bra-unit-toggle {
    display: flex;
    gap: 0.5rem;
}

.bra-unit-btn {
    flex: 1;
    padding: 0.6rem 1rem;
    border: 2px solid var(--border-color, #e2e8f0);
    border-radius: var(--bra-radius-sm);
    background: var(--bg-secondary, #f8fafc);
    color: var(--text-secondary, #64748b);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
}

.bra-unit-btn:hover {
    border-color: var(--bra-primary);
    color: var(--bra-primary);
}

.bra-unit-btn.active {
    border-color: var(--bra-primary);
    background: var(--bra-primary);
    color: white;
}

/* ============================================================
   MEASUREMENT INPUT
   ============================================================ */
.bra-measure-diagram {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--bra-pink-light);
    border-radius: var(--bra-radius-sm);
    margin-bottom: 0.85rem;
    border: 1px solid var(--bra-pink-mid);
}

.bra-diagram-icon {
    font-size: 1.5rem;
    color: var(--bra-pink);
    flex-shrink: 0;
}

.bra-diagram-text {
    font-size: 0.82rem;
    color: var(--text-secondary, #64748b);
    margin: 0;
    line-height: 1.4;
}

.bra-input-group {
    display: flex;
    align-items: center;
    border: 2px solid var(--border-color, #e2e8f0);
    border-radius: var(--bra-radius-sm);
    overflow: hidden;
    transition: border-color 0.2s ease;
}

.bra-input-group:focus-within {
    border-color: var(--bra-primary);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.bra-input {
    flex: 1;
    border: none;
    outline: none;
    padding: 0.75rem 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    background: transparent;
    color: var(--text-primary, #1e293b);
    width: 100%;
}

.bra-input-unit {
    padding: 0.75rem 1rem;
    background: var(--bg-secondary, #f8fafc);
    color: var(--text-secondary, #64748b);
    font-size: 0.85rem;
    font-weight: 500;
    border-left: 1px solid var(--border-color, #e2e8f0);
    white-space: nowrap;
}

.bra-input-hint {
    margin-top: 0.5rem;
    font-size: 0.78rem;
    color: var(--text-secondary, #64748b);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.bra-input-hint i {
    color: var(--bra-accent);
}

/* ============================================================
   CALCULATE BUTTON
   ============================================================ */
.bra-btn-calculate {
    width: 100%;
    padding: 0.9rem 1.5rem;
    background: linear-gradient(135deg, var(--bra-primary) 0%, var(--bra-secondary) 100%);
    color: white;
    border: none;
    border-radius: var(--bra-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
}

.bra-btn-calculate:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 64, 175, 0.4);
}

.bra-btn-calculate:active {
    transform: translateY(0);
}

.bra-btn-calculate:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.bra-btn-recalculate {
    width: 100%;
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: var(--bra-primary);
    border: 2px solid var(--bra-primary);
    border-radius: var(--bra-radius);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.bra-btn-recalculate:hover {
    background: var(--bra-primary);
    color: white;
}

/* ============================================================
   PRIVACY NOTE
   ============================================================ */
.bra-privacy-note {
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-secondary, #64748b);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
}

.bra-privacy-note i {
    color: var(--bra-success);
}

/* ============================================================
   PLACEHOLDER
   ============================================================ */
.bra-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    background: var(--bg-secondary, #f8fafc);
    border: 2px dashed var(--border-color, #e2e8f0);
    border-radius: var(--bra-radius);
}

.bra-placeholder-inner {
    text-align: center;
    padding: 2rem;
    max-width: 360px;
}

.bra-placeholder-icon {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.bra-placeholder-inner h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary, #1e293b);
    margin-bottom: 0.5rem;
}

.bra-placeholder-inner p {
    font-size: 0.88rem;
    color: var(--text-secondary, #64748b);
    margin-bottom: 1.25rem;
}

.bra-placeholder-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    text-align: left;
}

.bra-placeholder-feature {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.82rem;
    color: var(--text-secondary, #64748b);
}

/* ============================================================
   RESULT HERO
   ============================================================ */
.bra-result-hero {
    background: linear-gradient(135deg, var(--bra-pink) 0%, #9333ea 100%);
    border-radius: var(--bra-radius);
    padding: 1.75rem;
    text-align: center;
    color: white;
    box-shadow: var(--bra-shadow-md);
}

.bra-result-hero-label {
    font-size: 0.85rem;
    font-weight: 500;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.bra-result-hero-size {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.bra-result-hero-sub {
    font-size: 0.88rem;
    opacity: 0.85;
    margin-bottom: 1.25rem;
}

.bra-result-hero-details {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: rgba(255,255,255,0.15);
    border-radius: var(--bra-radius-sm);
    padding: 0.75rem 1rem;
}

.bra-result-detail {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
}

.bra-result-detail-label {
    font-size: 0.72rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.bra-result-detail-value {
    font-size: 1.1rem;
    font-weight: 700;
}

.bra-result-divider {
    width: 1px;
    height: 30px;
    background: rgba(255,255,255,0.3);
}

/* ============================================================
   INTERNATIONAL CONVERSIONS GRID
   ============================================================ */
.bra-conversions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
}

.bra-conversion-item {
    padding: 1rem;
    text-align: center;
    border-right: 1px solid var(--border-color, #e2e8f0);
    border-bottom: 1px solid var(--border-color, #e2e8f0);
    transition: background 0.2s ease;
}

.bra-conversion-item:hover {
    background: var(--bg-secondary, #f8fafc);
}

.bra-conversion-item.bra-conversion-primary {
    background: linear-gradient(135deg, rgba(219,39,119,0.08) 0%, rgba(147,51,234,0.08) 100%);
    border-color: var(--bra-pink-mid);
}

.bra-conversion-flag {
    font-size: 1.3rem;
    margin-bottom: 0.3rem;
}

.bra-conversion-label {
    font-size: 0.7rem;
    color: var(--text-secondary, #64748b);
    margin-bottom: 0.3rem;
    font-weight: 500;
}

.bra-conversion-size {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary, #1e293b);
}

.bra-conversion-primary .bra-conversion-size {
    color: var(--bra-pink);
}

/* ============================================================
   SISTER SIZES
   ============================================================ */
.bra-sister-intro {
    font-size: 0.85rem;
    color: var(--text-secondary, #64748b);
    margin-bottom: 1rem;
}

.bra-sister-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.bra-sister-item {
    padding: 1rem;
    background: var(--bg-secondary, #f8fafc);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: var(--bra-radius-sm);
    text-align: center;
    transition: all 0.2s ease;
}

.bra-sister-item:hover {
    border-color: var(--bra-primary);
    background: rgba(30, 64, 175, 0.04);
}

.bra-sister-size {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--bra-primary);
    margin-bottom: 0.25rem;
}

.bra-sister-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary, #1e293b);
    margin-bottom: 0.2rem;
}

.bra-sister-note {
    font-size: 0.72rem;
    color: var(--text-secondary, #64748b);
}

.bra-info-badge {
    margin-left: auto;
    color: var(--bra-accent);
    cursor: help;
    font-size: 0.85rem;
}

/* ============================================================
   FIT TIPS
   ============================================================ */
.bra-tips-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.bra-tip-item {
    padding: 0.85rem;
    background: var(--bg-secondary, #f8fafc);
    border-radius: var(--bra-radius-sm);
    border-left: 3px solid var(--bra-primary);
}

.bra-tip-title {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary, #1e293b);
    margin-bottom: 0.3rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.bra-tip-title i {
    color: var(--bra-primary);
    font-size: 0.8rem;
}

.bra-tip-text {
    font-size: 0.78rem;
    color: var(--text-secondary, #64748b);
    line-height: 1.5;
    margin: 0;
}

/* ============================================================
   HOW TO MEASURE — STEPS
   ============================================================ */
.bra-step {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color, #e2e8f0);
}

.bra-step:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.bra-step-number {
    width: 36px;
    height: 36px;
    min-width: 36px;
    background: linear-gradient(135deg, var(--bra-pink) 0%, #9333ea 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
}

.bra-step-content h5 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary, #1e293b);
    margin-bottom: 0.4rem;
}

.bra-step-content p {
    font-size: 0.85rem;
    color: var(--text-secondary, #64748b);
    margin: 0;
    line-height: 1.6;
}

.bra-guide-tip {
    margin-top: 0.75rem;
    padding: 0.6rem 0.85rem;
    background: rgba(6, 182, 212, 0.08);
    border-left: 3px solid var(--bra-accent);
    border-radius: 0 var(--bra-radius-sm) var(--bra-radius-sm) 0;
    font-size: 0.82rem;
    color: var(--text-secondary, #64748b);
}

.bra-guide-tip i {
    color: var(--bra-accent);
    margin-right: 0.3rem;
}

/* ============================================================
   SIGNS OF WRONG FIT
   ============================================================ */
.bra-sign-card {
    padding: 1rem;
    border-radius: var(--bra-radius-sm);
    height: 100%;
}

.bra-sign-card h6 {
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
}

.bra-sign-card ul {
    font-size: 0.8rem;
    color: var(--text-secondary, #64748b);
    padding-left: 1.2rem;
    margin-bottom: 0.75rem;
}

.bra-sign-card ul li {
    margin-bottom: 0.2rem;
}

.bra-sign-fix {
    font-size: 0.78rem;
    padding: 0.4rem 0.6rem;
    border-radius: var(--bra-radius-sm);
    background: rgba(255,255,255,0.6);
}

.bra-sign-band-too-small {
    background: rgba(220, 38, 38, 0.06);
    border: 1px solid rgba(220, 38, 38, 0.2);
}

.bra-sign-band-too-small h6 { color: var(--bra-danger); }

.bra-sign-band-too-large {
    background: rgba(217, 119, 6, 0.06);
    border: 1px solid rgba(217, 119, 6, 0.2);
}

.bra-sign-band-too-large h6 { color: var(--bra-warning); }

.bra-sign-cup-too-small {
    background: rgba(219, 39, 119, 0.06);
    border: 1px solid rgba(219, 39, 119, 0.2);
}

.bra-sign-cup-too-small h6 { color: var(--bra-pink); }

.bra-sign-cup-too-large {
    background: rgba(5, 150, 105, 0.06);
    border: 1px solid rgba(5, 150, 105, 0.2);
}

.bra-sign-cup-too-large h6 { color: var(--bra-success); }

/* ============================================================
   QUICK REFERENCE
   ============================================================ */
.bra-quick-ref {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.bra-quick-ref-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color, #e2e8f0);
    font-size: 0.82rem;
    gap: 0.5rem;
}

.bra-quick-ref-item:last-child {
    border-bottom: none;
}

.bra-quick-ref-label {
    font-weight: 600;
    color: var(--text-primary, #1e293b);
    white-space: nowrap;
}

.bra-quick-ref-value {
    color: var(--text-secondary, #64748b);
    text-align: right;
}

/* ============================================================
   SIZE CHART TABLE
   ============================================================ */
.bra-chart-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}

.bra-chart-table thead tr {
    background: var(--bra-primary);
    color: white;
}

.bra-chart-table thead th {
    padding: 0.7rem 0.85rem;
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
}

.bra-chart-table tbody tr:nth-child(even) {
    background: var(--bg-secondary, #f8fafc);
}

.bra-chart-table tbody tr:hover {
    background: rgba(30, 64, 175, 0.04);
}

.bra-chart-table tbody td {
    padding: 0.55rem 0.85rem;
    text-align: center;
    color: var(--text-primary, #1e293b);
    border-bottom: 1px solid var(--border-color, #e2e8f0);
}

/* ============================================================
   FAQ
   ============================================================ */
.bra-faq-item {
    border-bottom: 1px solid var(--border-color, #e2e8f0);
}

.bra-faq-item:last-child {
    border-bottom: none;
}

.bra-faq-btn {
    width: 100%;
    background: none;
    border: none;
    padding: 1rem 0;
    text-align: left;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary, #1e293b);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    transition: color 0.2s ease;
}

.bra-faq-btn:hover {
    color: var(--bra-primary);
}

.bra-faq-btn i {
    color: var(--bra-primary);
    font-size: 0.8rem;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.bra-faq-btn[aria-expanded="true"] i,
.bra-faq-btn:not(.collapsed) i {
    transform: rotate(180deg);
}

.bra-faq-body {
    padding: 0 0 1rem 0;
}

.bra-faq-body p {
    font-size: 0.85rem;
    color: var(--text-secondary, #64748b);
    line-height: 1.7;
    margin: 0;
}

/* ============================================================
   RESOURCE & RELATED LINKS
   ============================================================ */
.bra-resource-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 0;
    font-size: 0.85rem;
    color: var(--bra-primary);
    text-decoration: none;
    border-bottom: 1px solid var(--border-color, #e2e8f0);
    transition: color 0.2s ease;
}

.bra-resource-link:last-child {
    border-bottom: none;
}

.bra-resource-link:hover {
    color: var(--bra-pink);
}

.bra-resource-link i {
    font-size: 0.75rem;
    opacity: 0.7;
}

.bra-related-tool {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.65rem 0;
    font-size: 0.85rem;
    color: var(--text-primary, #1e293b);
    text-decoration: none;
    border-bottom: 1px solid var(--border-color, #e2e8f0);
    transition: all 0.2s ease;
}

.bra-related-tool:last-child {
    border-bottom: none;
}

.bra-related-tool:hover {
    color: var(--bra-primary);
    padding-left: 0.3rem;
}

.bra-related-tool i:first-child {
    color: var(--bra-primary);
    width: 16px;
    text-align: center;
}

/* ============================================================
   DISCLAIMER
   ============================================================ */
.bra-disclaimer-card {
    background: var(--bg-secondary, #f8fafc);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: var(--bra-radius);
    padding: 1rem;
    font-size: 0.8rem;
    color: var(--text-secondary, #64748b);
}

.bra-disclaimer-card i {
    color: var(--bra-primary);
    margin-bottom: 0.4rem;
    display: block;
    font-size: 1rem;
}

.bra-disclaimer-card h6 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary, #1e293b);
    margin-bottom: 0.4rem;
}

.bra-disclaimer-card p {
    margin: 0;
    line-height: 1.6;
}

/* ============================================================
   STICKY CARD
   ============================================================ */
.bra-sticky-card {
    position: sticky;
    top: 80px;
}

/* ============================================================
   ERROR MESSAGE
   ============================================================ */
.bra-error {
    padding: 1rem;
    background: rgba(220, 38, 38, 0.08);
    border: 1px solid rgba(220, 38, 38, 0.2);
    border-radius: var(--bra-radius-sm);
    color: var(--bra-danger);
    font-size: 0.88rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .bra-wrapper {
        padding: 1rem;
    }

    .bra-tabs {
        gap: 0.25rem;
    }

    .bra-tab-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.82rem;
    }

    .bra-result-hero-size {
        font-size: 3rem;
    }

    .bra-conversions-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .bra-tips-grid {
        grid-template-columns: 1fr;
    }

    .bra-sister-grid {
        grid-template-columns: 1fr 1fr;
    }

    .bra-placeholder {
        min-height: 280px;
    }
}

@media (max-width: 480px) {
    .bra-result-hero-size {
        font-size: 2.5rem;
    }

    .bra-conversions-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .bra-result-hero-details {
        gap: 0.6rem;
    }
}