/* ============================================
   CALCULATEUR D'ÉPAISSEUR - STYLES
   ============================================ */

/* ============================================
   PAGE HERO - Style cohérent avec le site
   ============================================ */
.gs-page-hero {
    background: linear-gradient(135deg, var(--gs-primary, #c41e3a) 0%, #8b1528 100%);
    padding: 2rem 0 3rem;
}

.gs-page-title {
    color: var(--gs-text-inverse);
    font-size: 2.5rem;
    margin: 0 0 0.5rem 0;
    font-weight: 700;
}

.gs-page-subtitle {
    color: rgba(255,255,255,0.9);
    font-size: 1.1rem;
    margin: 0;
}

/* Fil d'Ariane - Style propre */
.gs-page-breadcrumb {
    margin-bottom: 1.5rem;
}

.gs-page-breadcrumb ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.gs-page-breadcrumb li {
    display: flex;
    align-items: center;
}

.gs-page-breadcrumb li:not(:last-child)::after {
    content: '/';
    margin-left: 0.5rem;
    color: rgba(255,255,255,0.5);
}

.gs-page-breadcrumb a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: color 0.2s ease;
}

.gs-page-breadcrumb a:hover {
    color: var(--gs-text-inverse);
}

.gs-page-breadcrumb li:last-child span {
    color: var(--gs-text-inverse);
    font-weight: 500;
}

/* Calculator Wrapper */
.gs-calculator-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

@media (max-width: 992px) {
    .gs-calculator-wrapper {
        grid-template-columns: 1fr;
    }
}

/* Form Styles */
.gs-calculator-form {
    background: var(--gs-bg-white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.gs-calc-group {
    margin-bottom: 1.5rem;
}

.gs-calc-group:last-child {
    margin-bottom: 0;
}

.gs-calc-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--gs-secondary, #2c3e50);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.gs-calc-label i {
    color: var(--gs-primary, #c41e3a);
}

.gs-calc-label-optional {
    font-weight: 400;
    color: #888;
    font-size: 0.85rem;
}

/* Radio Group (Application) */
.gs-calc-radio-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

@media (max-width: 768px) {
    .gs-calc-radio-group {
        grid-template-columns: 1fr;
    }
}

.gs-calc-radio {
    cursor: pointer;
}

.gs-calc-radio input {
    display: none;
}

.gs-calc-radio-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1rem;
    border: 2px solid var(--gs-border, #e5e5e5);
    border-radius: var(--gs-radius-md);
    transition: all 0.2s ease;
}

.gs-calc-radio-box i {
    font-size: 1.5rem;
    color: #888;
    margin-bottom: 0.5rem;
    transition: color 0.2s ease;
}

.gs-calc-radio-box span {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--gs-secondary, #2c3e50);
}

.gs-calc-radio-box small {
    font-size: 0.75rem;
    color: #888;
    margin-top: 0.25rem;
}

.gs-calc-radio input:checked + .gs-calc-radio-box {
    border-color: var(--gs-primary, #c41e3a);
    background: rgba(196, 30, 58, 0.05);
}

.gs-calc-radio input:checked + .gs-calc-radio-box i {
    color: var(--gs-primary, #c41e3a);
}

/* Form Fields */
.gs-calc-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.gs-calc-field {
    margin-bottom: 1rem;
}

.gs-calc-field:last-child {
    margin-bottom: 0;
}

.gs-calc-field label {
    display: block;
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 0.4rem;
}

.gs-calc-select,
.gs-calc-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gs-border, #e5e5e5);
    border-radius: var(--gs-radius-md);
    font-size: 1rem;
    transition: border-color 0.2s ease;
    background: var(--gs-bg-white);
}

.gs-calc-select:focus,
.gs-calc-input:focus {
    outline: none;
    border-color: var(--gs-primary, #c41e3a);
}

.gs-calc-input-wrapper {
    position: relative;
}

.gs-calc-input-hint {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.75rem;
    color: #888;
    pointer-events: none;
}

/* Checkbox */
.gs-calc-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    padding: 1rem;
    border: 2px solid var(--gs-border, #e5e5e5);
    border-radius: var(--gs-radius-md);
    transition: all 0.2s ease;
}

.gs-calc-checkbox:hover {
    border-color: var(--gs-border-dark);
}

.gs-calc-checkbox input {
    display: none;
}

.gs-calc-checkbox-box {
    width: 22px;
    height: 22px;
    border: 2px solid var(--gs-border-dark);
    border-radius: var(--gs-radius-sm);
    flex-shrink: 0;
    position: relative;
    transition: all 0.2s ease;
}

.gs-calc-checkbox input:checked ~ .gs-calc-checkbox-box {
    background: var(--gs-primary, #c41e3a);
    border-color: var(--gs-primary, #c41e3a);
}

.gs-calc-checkbox input:checked ~ .gs-calc-checkbox-box::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--gs-text-inverse);
    font-size: 14px;
    font-weight: bold;
}

.gs-calc-checkbox-label {
    display: flex;
    flex-direction: column;
}

.gs-calc-checkbox-label small {
    color: #888;
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

/* ============================================
   RÉSULTAT & VISUALISATION
   ============================================ */
.gs-calculator-result {
    position: sticky;
    top: 120px;
}

.gs-calc-visual {
    background: linear-gradient(135deg, var(--gs-bg-light) 0%, #f0f0f0 100%);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 220px;
}

/* Conteneur des visuels */
.gs-calc-viz {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    min-height: 160px;
}

/* ============================================
   VISUEL LIVRE (CSS - Dos carré collé)
   ============================================ */
.gs-calc-viz-book {
    flex-direction: column;
    align-items: center;
}

.gs-calc-book {
    display: flex;
    align-items: stretch;
    height: 150px;
    position: relative;
}

.gs-calc-book-cover {
    width: 100px;
    background: linear-gradient(135deg, var(--gs-primary, #c41e3a) 0%, #8b1528 100%);
    border-radius: 2px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.gs-calc-book-front {
    border-radius: 2px 0 0 2px;
}

.gs-calc-book-back {
    border-radius: 0 2px 2px 0;
}

.gs-calc-book-spine {
    width: 20px;
    min-width: 5px;
    background: linear-gradient(180deg, var(--gs-primary-dark, #a01829) 0%, #7a1020 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: inset 0 0 10px rgba(0,0,0,0.2);
}

.gs-calc-spine-text {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    color: rgba(255,255,255,0.7);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 2px;
}

.gs-calc-book-pages {
    position: absolute;
    right: 102px;
    top: 5px;
    bottom: 5px;
    width: 16px;
    background: repeating-linear-gradient(
        to right,
        #fff 0px,
        #fff 1px,
        var(--gs-bg-alt) 1px,
        var(--gs-bg-alt) 2px
    );
    border-radius: 0 1px 1px 0;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
    padding: 5px 2px;
    overflow: hidden;
}

.gs-calc-page-line {
    height: 1px;
    background: var(--gs-border, #e5e5e5);
    width: 100%;
}

/* ============================================
   VISUELS CANVAS (Classeur & Nuancier)
   ============================================ */
.gs-calc-viz-binder canvas,
.gs-calc-viz-swatch canvas {
    max-width: 100%;
    height: auto;
}

/* ============================================
   RÈGLE HORIZONTALE (pour Dos carré collé)
   ============================================ */
.gs-calc-ruler-horizontal {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 40px;
    min-width: 40px;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.gs-calc-ruler-line-h {
    height: 3px;
    width: 100%;
    background: var(--gs-secondary, #2c3e50);
    position: relative;
    border-radius: 2px;
}

.gs-calc-ruler-line-h::before,
.gs-calc-ruler-line-h::after {
    content: '';
    position: absolute;
    top: -5px;
    width: 2px;
    height: 13px;
    background: var(--gs-secondary, #2c3e50);
}

.gs-calc-ruler-line-h::before { left: 0; }
.gs-calc-ruler-line-h::after { right: 0; }

.gs-calc-ruler-horizontal .gs-calc-ruler-value {
    margin-top: 0.75rem;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--gs-secondary, #2c3e50);
}

/* ============================================
   RÈGLE VERTICALE (pour Classeur & Nuancier)
   ============================================ */
/* Wrapper pour règle + visuel */
.gs-calc-visual-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
}

/* Règle verticale à gauche */
.gs-calc-ruler-vertical {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    height: 120px;
    min-height: 80px;
    transition: height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.gs-calc-ruler-line-v {
    width: 3px;
    height: 100%;
    background: var(--gs-secondary, #2c3e50);
    position: relative;
    border-radius: 2px;
}

.gs-calc-ruler-line-v::before,
.gs-calc-ruler-line-v::after {
    content: '';
    position: absolute;
    left: -5px;
    height: 2px;
    width: 13px;
    background: var(--gs-secondary, #2c3e50);
}

.gs-calc-ruler-line-v::before { top: 0; }
.gs-calc-ruler-line-v::after { bottom: 0; }

.gs-calc-ruler-vertical .gs-calc-ruler-value {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gs-secondary, #2c3e50);
    white-space: nowrap;
}

/* Zone des visuels */
.gs-calc-visual-content {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Result Box */
.gs-calc-result-box {
    background: var(--gs-bg-white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    margin-bottom: 1rem;
}

.gs-calc-result-main {
    text-align: center;
    padding-bottom: 1.25rem;
    border-bottom: 2px solid var(--gs-border-light);
    margin-bottom: 1.25rem;
}

.gs-calc-result-label {
    display: block;
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.5rem;
}

.gs-calc-result-value {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--gs-primary, #c41e3a);
    line-height: 1;
}

.gs-calc-result-unit {
    font-size: 1.5rem;
    color: var(--gs-secondary, #2c3e50);
    margin-left: 0.25rem;
}

.gs-calc-result-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.gs-calc-result-detail {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--gs-bg-alt);
}

.gs-calc-result-detail:last-child {
    border-bottom: none;
}

.gs-calc-detail-label {
    color: #666;
    font-size: 0.9rem;
}

.gs-calc-detail-value {
    font-weight: 600;
    color: var(--gs-secondary, #2c3e50);
}

.gs-calc-result-weight {
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 2px solid var(--gs-border-light);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #666;
    font-size: 0.9rem;
}

.gs-calc-result-weight i {
    color: var(--gs-primary, #c41e3a);
}

.gs-calc-result-weight strong {
    color: var(--gs-secondary, #2c3e50);
    margin-left: auto;
}

/* Conseil */
.gs-calc-advice {
    background: #fff8e6;
    border-left: 4px solid #f5a623;
    border-radius: 0 var(--gs-radius-md) var(--gs-radius-md) 0;
    padding: 1rem 1.25rem;
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.gs-calc-advice-icon {
    color: #f5a623;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.gs-calc-advice-content {
    font-size: 0.9rem;
    color: #5d4e37;
    line-height: 1.5;
}

.gs-calc-advice-content strong {
    color: #8b6914;
}

/* CTA */
.gs-calc-cta {
    text-align: center;
}

.gs-btn-block {
    display: block;
    width: 100%;
}

.gs-calc-cta-text {
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: #888;
}

.gs-calc-cta-text i {
    margin-right: 0.25rem;
}

/* ============================================
   SECTION INFO SEO
   ============================================ */
.gs-calc-info-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
}

@media (max-width: 992px) {
    .gs-calc-info-grid {
        grid-template-columns: 1fr;
    }
}

.gs-calc-info-main h2 {
    color: var(--gs-secondary, #2c3e50);
    margin-bottom: 1rem;
}

.gs-calc-info-main h3 {
    color: var(--gs-secondary, #2c3e50);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.gs-calc-info-main p {
    color: #555;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.gs-calc-formula {
    background: var(--gs-bg-light);
    border-left: 4px solid var(--gs-primary, #c41e3a);
    padding: 1rem 1.5rem;
    margin: 1rem 0;
    border-radius: 0 var(--gs-radius-md) var(--gs-radius-md) 0;
}

.gs-calc-formula code {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.95rem;
    color: var(--gs-secondary, #2c3e50);
}

/* Sidebar boxes */
.gs-calc-info-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.gs-calc-info-box {
    background: var(--gs-bg-white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.gs-calc-info-box h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gs-secondary, #2c3e50);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.gs-calc-info-box h4 i {
    color: var(--gs-primary, #c41e3a);
}

.gs-calc-info-box ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.gs-calc-info-box li {
    padding: 0.5rem 0;
    padding-left: 1.25rem;
    position: relative;
    color: #555;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--gs-bg-alt);
}

.gs-calc-info-box li:last-child {
    border-bottom: none;
}

.gs-calc-info-box li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--gs-primary, #c41e3a);
    font-weight: bold;
}

.gs-calc-info-box p {
    color: #555;
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.gs-calc-info-box p:last-child {
    margin-bottom: 0;
}

.gs-calc-info-box-highlight {
    background: linear-gradient(135deg, rgba(196, 30, 58, 0.05) 0%, rgba(196, 30, 58, 0.1) 100%);
    border: 1px solid rgba(196, 30, 58, 0.2);
}

/* Produits associés */
.gs-calc-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .gs-calc-products-grid {
        grid-template-columns: 1fr;
    }
}

.gs-calc-product-card {
    background: var(--gs-bg-white);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    text-decoration: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
}

.gs-calc-product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.gs-calc-product-icon {
    width: 60px;
    height: 60px;
    background: rgba(196, 30, 58, 0.1);
    border-radius: var(--gs-radius-circle);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.gs-calc-product-icon i {
    font-size: 1.5rem;
    color: var(--gs-primary, #c41e3a);
}

.gs-calc-product-card h3 {
    color: var(--gs-secondary, #2c3e50);
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.gs-calc-product-card p {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}