/* Калькулятор 4 в 1 — стили с префиксом calc-4in1 */
.calc-4in1-container * {
    box-sizing: border-box;
}

.calc-4in1-container {
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --success-gradient: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    --danger-gradient: linear-gradient(135deg, #ef4444 0%, #f87171 100%);
    --warning-gradient: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    --card-bg: #ffffff;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --card-hover-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --border-radius: 12px;
    --input-radius: 8px;
    --transition: all 0.3s ease;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    color: #1e293b;
    padding: 24px 0;
    line-height: 1.5;
}

.calc-4in1-title {
    text-align: center;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 32px;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.calc-4in1-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(600px, 1fr));
    gap: 24px;
}

.calc-4in1-block {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(99, 102, 241, 0.1);
    transition: var(--transition);
}

.calc-4in1-block:hover {
    box-shadow: var(--card-hover-shadow);
    transform: translateY(-2px);
}

.calc-4in1-block h2 {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 6px;
    padding-bottom: 12px;
    border-bottom: 2px solid rgba(99, 102, 241, 0.2);
    font-size: 18px;
    font-weight: 600;
}

.calc-4in1-block h3 {
    color: #64748b;
    margin: 6px 0 12px 0;
    font-size: 13px;
    font-weight: 500;
}

.calc-4in1-block p {
    color: #64748b;
    font-size: 12px;
    margin-bottom: 16px;
    line-height: 1.6;
}

.calc-4in1-form-group {
    margin-bottom: 12px;
}

.calc-4in1-form-group label {
    display: block;
    margin-bottom: 4px;
    color: #475569;
    font-weight: 500;
    font-size: 11px;
    white-space: nowrap;
}

.calc-4in1-form-group input,
.calc-4in1-form-group select {
    width: 100%;
    padding: 8px 10px;
    border: 1.5px solid #e2e8f0;
    border-radius: var(--input-radius);
    font-size: 13px;
    transition: var(--transition);
    background: #f8fafc;
}

.calc-4in1-form-group input:focus,
.calc-4in1-form-group select:focus {
    outline: none;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    background: #ffffff;
}

.calc-4in1-btn {
    padding: 8px 14px;
    border: none;
    border-radius: var(--input-radius);
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    transition: var(--transition);
    margin-right: 6px;
    margin-bottom: 6px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

.calc-4in1-btn-primary {
    background: var(--primary-gradient);
    color: white;
}

.calc-4in1-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.calc-4in1-btn-secondary {
    background: #f1f5f9;
    color: #475569;
}

.calc-4in1-btn-secondary:hover {
    background: #e2e8f0;
}

.calc-4in1-btn-danger {
    background: var(--danger-gradient);
    color: white;
    padding: 8px 12px;
    font-size: 11px;
}

.calc-4in1-btn-danger:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

.calc-4in1-btn-success {
    background: var(--success-gradient);
    color: white;
}

.calc-4in1-btn-success:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.calc-4in1-btn-warning {
    background: var(--warning-gradient);
    color: white;
}

.calc-4in1-btn-warning:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

.calc-4in1-position-item {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    padding: 12px;
    border-radius: var(--input-radius);
    margin-bottom: 10px;
    border-left: 4px solid #6366f1;
    transition: var(--transition);
}

.calc-4in1-position-item:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.calc-4in1-single-row {
    display: grid;
    grid-template-columns: 70px 70px 70px 70px 70px 70px 1fr auto;
    gap: 5px;
    align-items: end;
}

.calc-4in1-single-row .calc-4in1-form-group { margin-bottom: 0; }

.calc-4in1-single-row .calc-4in1-position-label {
    display: flex;
    align-items: center;
    font-weight: 600;
    color: #6366f1;
    font-size: 13px;
    padding-top: 20px;
}

.calc-4in1-paint-row {
    display: grid;
    grid-template-columns: 70px 70px 70px 70px 70px 70px 1fr auto;
    gap: 5px;
    align-items: end;
}

.calc-4in1-paint-row .calc-4in1-form-group { margin-bottom: 0; }

.calc-4in1-paint-row .calc-4in1-position-label {
    display: flex;
    align-items: center;
    font-weight: 600;
    color: #6366f1;
    font-size: 13px;
    padding-top: 20px;
}

.calc-4in1-paint-row .calc-4in1-radio-group {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.calc-4in1-paint-row .calc-4in1-radio-group label {
    display: flex;
    align-items: center;
    gap: 2px;
    font-size: 9px;
    margin-bottom: 0;
    white-space: nowrap;
}

.calc-4in1-paint-row .calc-4in1-radio-group input[type="radio"] {
    width: 11px;
    height: 11px;
    accent-color: #6366f1;
    cursor: pointer;
}

.calc-4in1-fastener-row {
    display: grid;
    grid-template-columns: 80px 80px 90px 90px 1fr auto;
    gap: 8px;
    align-items: end;
}

.calc-4in1-fastener-row .calc-4in1-position-label {
    display: flex;
    align-items: center;
    font-weight: 600;
    color: #6366f1;
    font-size: 13px;
    padding-top: 20px;
}

.calc-4in1-results {
    background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
    padding: 16px;
    border-radius: var(--input-radius);
    margin-top: 16px;
    border: 1px solid #86efac;
}

.calc-4in1-results h3 {
    color: #16a34a;
    margin-bottom: 12px;
    font-size: 14px;
    font-weight: 600;
}

.calc-4in1-result-item {
    padding: 6px 0;
    border-bottom: 1px solid #e2e8f0;
    font-size: 13px;
}

.calc-4in1-result-item:last-child { border-bottom: none; }

.calc-4in1-result-label { font-weight: 500; color: #475569; }

.calc-4in1-result-value { color: #6366f1; font-weight: 600; }

.calc-4in1-diameter-summary {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    padding: 12px;
    border-radius: 8px;
    margin-top: 12px;
    border-left: 4px solid #10b981;
}

.calc-4in1-diameter-summary-item {
    padding: 4px 0;
    font-size: 13px;
    display: flex;
    justify-content: space-between;
}

.calc-4in1-tooltip-container {
    position: relative;
    display: inline-block;
    z-index: 1000;
}

.calc-4in1-info-tooltip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: white;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    font-size: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    margin-left: 4px;
}

.calc-4in1-tooltip-text {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: #1e293b;
    color: #fff;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 11px;
    line-height: 1.5;
    max-width: 280px;
    white-space: normal;
    z-index: 1001;
    transition: var(--transition);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    text-align: left;
}

.calc-4in1-tooltip-container:hover .calc-4in1-tooltip-text {
    visibility: visible;
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.calc-4in1-toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--success-gradient);
    color: white;
    padding: 14px 24px;
    border-radius: var(--input-radius);
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.3);
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
    z-index: 1000;
}

.calc-4in1-toast.show {
    transform: translateY(0);
    opacity: 1;
}

@media (max-width: 1200px) {
    .calc-4in1-grid { grid-template-columns: 1fr; }
    .calc-4in1-single-row,
    .calc-4in1-paint-row,
    .calc-4in1-fastener-row {
        grid-template-columns: 1fr 1fr;
    }
    .calc-4in1-single-row .calc-4in1-position-label,
    .calc-4in1-paint-row .calc-4in1-position-label,
    .calc-4in1-fastener-row .calc-4in1-position-label {
        grid-column: 1 / -1;
        padding-top: 0;
        margin-bottom: 8px;
    }
    .calc-4in1-single-row .calc-4in1-btn-danger,
    .calc-4in1-paint-row .calc-4in1-btn-danger,
    .calc-4in1-fastener-row .calc-4in1-btn-danger {
        grid-column: 1 / -1;
        margin-top: 8px;
    }
}