/* ═══════════════════════════════════════════════════════════
   Volume Calculator v2.0 — Frontend Styles
   ═══════════════════════════════════════════════════════════ */

:root {
    --vc-primary: #ea3062;
    --vc-primary-hover: color-mix(in srgb, var(--vc-primary) 85%, #000);
    --vc-text: #333333;
    --vc-text-light: #666666;
    --vc-bg: #ffffff;
    --vc-bg-alt: #f8f9fa;
    --vc-border: #e2e8f0;
    --vc-radius: 8px;
    --vc-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --vc-shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.1);
    --vc-transition: 0.25s ease;
}

/* ─── Container ─────────────────────────────── */
.vc-calculator {
    max-width: 800px;
    margin: 0 auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, sans-serif;
    color: var(--vc-text);
    font-size: 15px;
    line-height: 1.5;
}

.vc-calculator *,
.vc-calculator *::before,
.vc-calculator *::after {
    box-sizing: border-box;
}

.vc-title {
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 0 24px;
    color: var(--vc-text);
}

.vc-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--vc-text-light);
    background: var(--vc-bg-alt);
    border-radius: var(--vc-radius);
}

/* ─── Category Accordion ────────────────────── */
.vc-category {
    background: var(--vc-bg);
    border: 1px solid var(--vc-border);
    border-radius: var(--vc-radius);
    margin-bottom: 12px;
    overflow: hidden;
    box-shadow: var(--vc-shadow);
    transition: box-shadow var(--vc-transition);
}

.vc-category:hover {
    box-shadow: var(--vc-shadow-lg);
}

.vc-category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    cursor: pointer;
    background: var(--vc-bg-alt);
    border-bottom: 1px solid transparent;
    transition: background var(--vc-transition), border-color var(--vc-transition);
    user-select: none;
}

.vc-category.is-open .vc-category-header {
    border-bottom-color: var(--vc-border);
    background: var(--vc-bg);
}

.vc-category-name {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--vc-text);
}

.vc-category-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
    border-radius: 4px;
}

.vc-toggle-icon {
    display: flex;
    align-items: center;
    color: var(--vc-text-light);
    transition: transform var(--vc-transition);
}

.vc-category.is-open .vc-toggle-icon {
    transform: rotate(180deg);
}

/* ─── Items inside category ─────────────────── */
.vc-category-items {
    display: none;
    padding: 4px 0;
}

.vc-category.is-open .vc-category-items {
    display: block;
}

.vc-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 18px;
    border-bottom: 1px solid #f0f0f0;
    transition: background var(--vc-transition);
}

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

.vc-item:hover {
    background: var(--vc-bg-alt);
}

.vc-item.has-value {
    background: #fef2f5;
}

.vc-item-label {
    flex: 1;
    font-size: 14px;
    color: var(--vc-text);
    padding-right: 12px;
}

.vc-item-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.vc-item-vol {
    font-size: 13px;
    color: var(--vc-text-light);
    min-width: 55px;
    text-align: right;
}

.vc-item.has-value .vc-item-vol {
    color: var(--vc-primary);
    font-weight: 600;
}

/* +/- buttons */
.vc-btn-minus,
.vc-btn-plus {
    width: 32px;
    height: 32px;
    border: 1px solid var(--vc-border);
    border-radius: 6px;
    background: var(--vc-bg);
    color: var(--vc-text);
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--vc-transition);
    line-height: 1;
    padding: 0;
}

.vc-btn-minus:hover,
.vc-btn-plus:hover {
    background: var(--vc-primary);
    color: #fff;
    border-color: var(--vc-primary);
}

.vc-item-count {
    width: 50px;
    height: 32px;
    text-align: center;
    border: 1px solid var(--vc-border);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--vc-text);
    background: var(--vc-bg);
    -moz-appearance: textfield;
    outline: none;
    padding: 0;
}

.vc-item-count::-webkit-outer-spin-button,
.vc-item-count::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.vc-item-count:focus {
    border-color: var(--vc-primary);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--vc-primary) 20%, transparent);
}

/* ─── Summary Section ───────────────────────── */
.vc-summary {
    background: var(--vc-bg-alt);
    border: 2px solid var(--vc-primary);
    border-radius: var(--vc-radius);
    padding: 18px 20px;
    margin: 20px 0;
}

.vc-summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
}

.vc-summary-label {
    font-size: 14px;
    color: var(--vc-text-light);
}

.vc-summary-value {
    font-size: 16px;
    color: var(--vc-text);
}

.vc-summary-value strong {
    color: var(--vc-primary);
    font-size: 22px;
}

.vc-summary-containers {
    border-top: 1px solid var(--vc-border);
    margin-top: 6px;
    padding-top: 10px;
}

/* ─── Quote Form ────────────────────────────── */
.vc-quote-form {
    background: var(--vc-bg);
    border: 1px solid var(--vc-border);
    border-radius: var(--vc-radius);
    padding: 24px;
    box-shadow: var(--vc-shadow);
}

.vc-form-title {
    font-size: 20px;
    font-weight: 700;
    margin: 0 0 20px;
    color: var(--vc-text);
}

.vc-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.vc-field-full {
    grid-column: 1 / -1;
}

.vc-field input[type="text"],
.vc-field input[type="email"],
.vc-field input[type="tel"],
.vc-field input[type="number"],
.vc-field select,
.vc-field textarea {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--vc-border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    color: var(--vc-text);
    background: var(--vc-bg);
    transition: border-color var(--vc-transition), box-shadow var(--vc-transition);
    outline: none;
}

.vc-field input:focus,
.vc-field select:focus,
.vc-field textarea:focus {
    border-color: var(--vc-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--vc-primary) 15%, transparent);
}

.vc-field select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%23666' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.vc-field textarea {
    resize: vertical;
    min-height: 80px;
}

/* Submit button */
.vc-form-submit {
    margin-top: 20px;
    text-align: center;
}

.vc-submit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 40px;
    background: var(--vc-primary);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--vc-transition);
    min-width: 220px;
}

.vc-submit-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--vc-primary) 40%, transparent);
}

.vc-submit-btn:active {
    transform: translateY(0);
}

.vc-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.vc-spinner {
    animation: vc-spin 1s linear infinite;
}

@keyframes vc-spin {
    100% { transform: rotate(360deg); }
}

/* Messages */
.vc-form-message {
    margin-top: 16px;
    padding: 14px 18px;
    border-radius: 6px;
    font-size: 14px;
    text-align: center;
}

.vc-form-message.vc-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.vc-form-message.vc-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ─── Responsive ────────────────────────────── */
@media (max-width: 600px) {
    .vc-form-grid {
        grid-template-columns: 1fr;
    }

    .vc-item {
        flex-wrap: wrap;
        gap: 8px;
    }

    .vc-item-label {
        width: 100%;
        padding-right: 0;
    }

    .vc-item-controls {
        width: 100%;
        justify-content: flex-end;
    }

    .vc-summary-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    .vc-submit-btn {
        width: 100%;
    }

    .vc-category-header {
        padding: 12px 14px;
    }

    .vc-item {
        padding: 10px 14px;
    }

    .vc-quote-form {
        padding: 16px;
    }
}

/* ─── jQuery UI Datepicker overrides ────────── */
.ui-datepicker {
    font-family: inherit !important;
    border-radius: var(--vc-radius) !important;
    box-shadow: var(--vc-shadow-lg) !important;
    border: 1px solid var(--vc-border) !important;
    padding: 8px !important;
    z-index: 9999 !important;
}

.ui-datepicker .ui-datepicker-header {
    background: var(--vc-primary) !important;
    border: none !important;
    border-radius: 4px !important;
    color: #fff !important;
    padding: 6px !important;
}

.ui-datepicker td .ui-state-active {
    background: var(--vc-primary) !important;
    color: #fff !important;
    border-radius: 4px !important;
}

.ui-datepicker td .ui-state-hover {
    background: #f0f0f0 !important;
    border-radius: 4px !important;
}