/* ============================================
   Calculateur Béton - Style Immobilier
   Palette : Cyan #17C3D8 | Marine #0D1F3C | Gris #A0AABB
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;600;700;800&family=Barlow:wght@400;500;600&display=swap');

:root {
    --cb-cyan: #17C3D8;
    --cb-cyan-dark: #0FA8BA;
    --cb-navy: #0D1F3C;
    --cb-navy-light: #1A2E50;
    --cb-gray: #A0AABB;
    --cb-gray-light: #E8EDF5;
    --cb-white: #FFFFFF;
    --cb-green: #2ECC71;
    --cb-shadow: 0 4px 24px rgba(13, 31, 60, 0.10);
    --cb-shadow-hover: 0 8px 32px rgba(13, 31, 60, 0.18);
    --cb-radius: 12px;
    --cb-font-display: 'Barlow Condensed', sans-serif;
    --cb-font-body: 'Barlow', sans-serif;
}

/* ---- Wrapper ---- */
#calculateur-beton {
    font-family: var(--cb-font-body);
    font-size: 18px;
    max-width: 980px;
    margin: 40px auto;
    padding: 0;
    color: var(--cb-navy);
}

/* ---- Header ---- */
.cb-header {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--cb-gray-light);
}

.cb-header-icon {
    color: var(--cb-cyan);
    font-size: 28px;
    line-height: 1;
    flex-shrink: 0;
}

.cb-title {
    font-family: var(--cb-font-display);
    font-size: 58px;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.5px;
    text-transform: uppercase;
    margin: 0 0 6px 0;
}

.cb-title-cyan {
    color: var(--cb-cyan);
}

.cb-title-dark {
    color: var(--cb-navy);
}

.cb-subtitle {
    font-family: var(--cb-font-display);
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--cb-gray);
    text-transform: uppercase;
    margin: 0;
}

/* ---- Form Grid ---- */
.cb-form-grid {
    background: var(--cb-white);
    border: 1px solid var(--cb-gray-light);
    border-radius: var(--cb-radius);
    padding: 40px;
    box-shadow: var(--cb-shadow);
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 28px;
    margin-bottom: 28px;
}

.cb-full {
    grid-column: 1 / -1;
}

/* ---- Labels ---- */
.cb-label {
    display: block;
    font-family: var(--cb-font-display);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--cb-navy);
    text-transform: uppercase;
    margin-bottom: 12px;
}

/* ---- Inputs ---- */
.cb-input {
    width: 100%;
    box-sizing: border-box;
    padding: 18px 22px;
    border: 2px solid var(--cb-gray-light);
    border-radius: 8px;
    font-family: var(--cb-font-display);
    font-size: 36px;
    font-weight: 700;
    color: var(--cb-navy);
    background: var(--cb-white);
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
    letter-spacing: -0.5px;
}

.cb-input:focus {
    border-color: var(--cb-cyan);
    box-shadow: 0 0 0 3px rgba(23, 195, 216, 0.15);
}

/* ---- Select ---- */
.cb-select {
    width: 100%;
    box-sizing: border-box;
    padding: 18px 22px;
    border: 2px solid var(--cb-gray-light);
    border-radius: 8px;
    font-family: var(--cb-font-display);
    font-size: 24px;
    font-weight: 700;
    color: var(--cb-navy);
    background: var(--cb-white);
    cursor: pointer;
    transition: border-color 0.2s;
    outline: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='10' viewBox='0 0 14 10'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%230D1F3C' stroke-width='2.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 22px center;
    padding-right: 52px;
}

.cb-select:focus {
    border-color: var(--cb-cyan);
}

/* ---- Tabs ---- */
.cb-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.cb-tab {
    padding: 14px 26px;
    border: 2px solid var(--cb-gray-light);
    border-radius: 8px;
    background: var(--cb-white);
    font-family: var(--cb-font-display);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--cb-navy);
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
}

.cb-tab:hover {
    border-color: var(--cb-cyan);
    color: var(--cb-cyan);
}

.cb-tab.cb-tab-active {
    background: var(--cb-navy);
    border-color: var(--cb-navy);
    color: var(--cb-white);
}

.cb-tab-sm {
    padding: 12px 20px;
    font-size: 17px;
}

/* ---- Dimensions groups ---- */
.cb-dims-group {
    display: none;
    grid-column: 1 / -1;
    display: none;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
}

.cb-dims-group.active {
    display: grid;
}

/* ---- Bouton calculer ---- */
.cb-btn-row {
    display: flex;
    justify-content: flex-start;
}

.cb-btn-calculate {
    background: var(--cb-cyan);
    color: var(--cb-white);
    border: none;
    border-radius: 8px;
    padding: 20px 48px;
    font-family: var(--cb-font-display);
    font-size: 22px;
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
    box-shadow: 0 4px 16px rgba(23, 195, 216, 0.35);
}

.cb-btn-calculate:hover {
    background: var(--cb-cyan-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(23, 195, 216, 0.45);
}

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

/* ---- Résultats ---- */
.cb-results {
    background: var(--cb-navy);
    border-radius: var(--cb-radius);
    padding: 32px;
    box-shadow: var(--cb-shadow-hover);
    animation: cb-fadeIn 0.4s ease;
}

@keyframes cb-fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.cb-results-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.cb-results-icon {
    color: var(--cb-cyan);
    font-size: 22px;
}

.cb-results-title {
    font-family: var(--cb-font-display);
    font-size: 36px;
    font-weight: 800;
    color: var(--cb-white);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0;
}

/* Volume mis en valeur */
.cb-result-volume {
    background: rgba(23, 195, 216, 0.1);
    border: 1px solid rgba(23, 195, 216, 0.3);
    border-radius: 10px;
    padding: 24px 28px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.cb-result-volume-label {
    font-family: var(--cb-font-display);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--cb-gray);
    text-transform: uppercase;
}

.cb-result-volume-value {
    font-family: var(--cb-font-display);
    font-size: 56px;
    font-weight: 800;
    color: var(--cb-cyan);
    letter-spacing: -1px;
}

/* Cards dosage */
.cb-dosage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.cb-dosage-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 20px 16px;
    text-align: center;
    transition: background 0.2s;
}

.cb-dosage-card:hover {
    background: rgba(255, 255, 255, 0.08);
}

.cb-dosage-icon {
    font-size: 32px;
    margin-bottom: 10px;
}

.cb-dosage-label {
    font-family: var(--cb-font-display);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--cb-gray);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.cb-dosage-value {
    font-family: var(--cb-font-display);
    font-size: 34px;
    font-weight: 800;
    color: var(--cb-white);
}

.cb-dosage-sacs {
    font-family: var(--cb-font-body);
    font-size: 15px;
    font-weight: 500;
    color: var(--cb-cyan);
    margin-top: 6px;
}

/* Note */
.cb-note {
    font-family: var(--cb-font-body);
    font-size: 16px;
    color: var(--cb-gray);
    margin: 0 0 28px 0;
    line-height: 1.6;
}

/* ---- Partage social ---- */
.cb-share-section {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 28px;
}

.cb-share-label {
    font-family: var(--cb-font-display);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 2.5px;
    color: var(--cb-gray);
    text-transform: uppercase;
    margin-bottom: 16px;
}

.cb-share-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.cb-share-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 26px;
    border-radius: 8px;
    font-family: var(--cb-font-display);
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    text-decoration: none;
    transition: transform 0.15s, box-shadow 0.2s, opacity 0.2s;
    border: none;
}

.cb-share-btn:hover {
    transform: translateY(-2px);
    text-decoration: none;
}

.cb-share-facebook {
    background: #1877F2;
    color: #fff;
    box-shadow: 0 4px 12px rgba(24, 119, 242, 0.35);
}

.cb-share-facebook:hover {
    box-shadow: 0 6px 18px rgba(24, 119, 242, 0.5);
    color: #fff;
}

.cb-share-whatsapp {
    background: #25D366;
    color: #fff;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.35);
}

.cb-share-whatsapp:hover {
    box-shadow: 0 6px 18px rgba(37, 211, 102, 0.5);
    color: #fff;
}

.cb-share-twitter {
    background: #000000;
    color: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.cb-share-twitter:hover {
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.45);
    color: #fff;
}

/* ---- Responsive ---- */
@media (max-width: 680px) {
    .cb-title { font-size: 28px; }
    .cb-form-grid { padding: 20px; gap: 14px; }
    .cb-dosage-grid { grid-template-columns: repeat(2, 1fr); }
    .cb-result-volume { flex-direction: column; gap: 8px; text-align: center; }
    .cb-result-volume-value { font-size: 36px; }
    .cb-results { padding: 20px; }
    .cb-tabs { gap: 6px; }
    .cb-tab { padding: 7px 12px; font-size: 11px; }
}

@media (max-width: 480px) {
    .cb-dosage-grid { grid-template-columns: 1fr 1fr; }
    .cb-share-buttons { flex-direction: column; }
    .cb-share-btn { justify-content: center; }
}