:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
}

body {
    font-family: 'Saira', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1.5rem 0;
    border-radius: 0 0 10px 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    margin-bottom: 1.5rem;
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card-header {
    background-color: var(--primary-color);
    color: white;
    border-radius: 10px 10px 0 0 !important;
    padding: 1rem 1.25rem;
    font-weight: 600;
}

.scenario-card {
    border-left: 5px solid var(--secondary-color);
}

.scenario-card.selected {
    border-left: 5px solid var(--success-color);
    background-color: rgba(39, 174, 96, 0.05);
}

.scenario-card.optimized {
    border-left: 5px solid var(--warning-color);
    background-color: rgba(243, 156, 18, 0.05);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(243, 156, 18, 0.4);
    }

    70% {
        box-shadow: 0 0 0 10px rgba(243, 156, 18, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(243, 156, 18, 0);
    }
}

.btn-primary {
    background-color: var(--secondary-color);
    border: none;
    padding: 0.5rem 1.5rem;
    border-radius: 5px;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-success {
    background-color: var(--success-color);
    border: none;
}

.btn-warning {
    background-color: var(--warning-color);
    border: none;
}

.btn-danger {
    background-color: var(--danger-color);
    border: none;
}

.btn-optimize {
    background: linear-gradient(135deg, #f39c12, #e74c3c);
    color: white;
    border: none;
}

.result-box {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 1rem;
    border-left: 4px solid var(--secondary-color);
}

.optimization-result {
    background: linear-gradient(135deg, #fff8e1, #ffecb3);
    border-left: 4px solid var(--warning-color);
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 1rem;
}

.positive {
    color: var(--success-color);
    font-weight: 600;
}

.negative {
    color: var(--danger-color);
    font-weight: 600;
}

.history-item {
    border-left: 4px solid var(--warning-color);
    margin-bottom: 0.75rem;
    padding: 0.75rem;
    background-color: #f8f9fa;
    border-radius: 0 5px 5px 0;
    cursor: pointer;
    transition: all 0.2s;
}

.history-item:hover {
    background-color: #e9ecef;
    transform: translateX(5px);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.25rem rgba(52, 152, 219, 0.25);
}

.footer {
    background-color: var(--primary-color);
    color: white;
    padding: 1.5rem 0;
    margin-top: 3rem;
    border-radius: 10px 10px 0 0;
}

.calculation-formula {
    background-color: #f1f8ff;
    padding: 1rem;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    margin-top: 1rem;
}

.info-badge {
    background-color: var(--light-color);
    color: var(--dark-color);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    margin-left: 0.5rem;
    cursor: help;
}

.guide-step {
    counter-increment: step-counter;
    margin-bottom: 1.5rem;
    padding-left: 3rem;
    position: relative;
}

.guide-step:before {
    content: counter(step-counter);
    background-color: var(--secondary-color);
    color: white;
    font-weight: bold;
    border-radius: 50%;
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    left: 0;
    top: 0;
}

.example-box {
    background-color: #e8f4fc;
    border-left: 4px solid var(--secondary-color);
    padding: 1rem;
    border-radius: 0 8px 8px 0;
    margin: 1rem 0;
}

.warning-box {
    background-color: #fff3cd;
    border-left: 4px solid var(--warning-color);
    padding: 1rem;
    border-radius: 0 8px 8px 0;
    margin: 1rem 0;
}

.tip-box {
    background-color: #d1ecf1;
    border-left: 4px solid #17a2b8;
    padding: 1rem;
    border-radius: 0 8px 8px 0;
    margin: 1rem 0;
}

.analogy-box {
    background-color: #f8f9fa;
    border: 2px dashed #6c757d;
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
    font-style: italic;
}

.guide-tabs .nav-link {
    color: var(--primary-color);
    font-weight: 500;
}

.guide-tabs .nav-link.active {
    background-color: var(--primary-color);
    color: white;
}

.accordion-button:not(.collapsed) {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--primary-color);
}

.accordion-button:focus {
    box-shadow: 0 0 0 0.25rem rgba(52, 152, 219, 0.25);
}

.optimization-badge {
    background: linear-gradient(135deg, #f39c12, #e74c3c);
    color: white;
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: 10px;
    margin-left: 0.5rem;
}

.disclaimer-modal .modal-content {
    border-radius: 15px;
    border: 2px solid var(--warning-color);
}

.disclaimer-modal .modal-header {
    background-color: var(--warning-color);
    color: white;
    border-radius: 13px 13px 0 0;
}

.terms-content {
    max-height: 400px;
    overflow-y: auto;
    padding: 1rem;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    background-color: #f8f9fa;
}

.terms-section {
    margin-bottom: 1.5rem;
}

.terms-section h5 {
    color: var(--primary-color);
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.terms-list {
    padding-left: 1.5rem;
}

.terms-list li {
    margin-bottom: 0.5rem;
}

.signature-section {
    border-top: 2px dashed #dee2e6;
    padding-top: 1.5rem;
    margin-top: 1.5rem;
}

.view-terms-link {
    color: var(--secondary-color);
    cursor: pointer;
    text-decoration: underline;
    font-size: 0.9rem;
}

.view-terms-link:hover {
    color: #2980b9;
}

.x-small {
    font-size: 0.75rem;
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 1.75rem;
    }

    .guide-step {
        padding-left: 2.5rem;
    }

    .guide-step:before {
        width: 2rem;
        height: 2rem;
        font-size: 0.9rem;
    }

    .terms-content {
        max-height: 300px;
    }
}