.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    border: none;
    border-radius: var(--border-radius-pill);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    gap: var(--spacing-xs);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    box-shadow: 0 8px 24px rgba(255, 107, 53, 0.4);
    color: white;
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--text);
}

.btn-large {
    height: 56px;
    padding: 0 48px;
    font-size: 18px;
    border: 2px solid rgba(255, 255, 255, 0.5) !important;
}

.btn-icon {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: 50%;
}

.chip {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border: 2px solid var(--primary-color);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    background: transparent;
    color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition-fast);
}

.chip:hover {
    background: rgba(255, 107, 53, 0.1);
    transform: translateY(-2px);
}

.chip.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
}

.chips-container {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    overflow-x: auto;
    padding: var(--spacing-xs) 0;
}

.chips-container::-webkit-scrollbar {
    height: 6px;
}

.chips-container::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
}

.slider-container {
    margin: var(--spacing-md) 0;
}

.slider-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.slider-value {
    font-size: 24px;
    color: var(--primary-color);
    font-weight: 700;
}

.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: linear-gradient(to right, var(--primary-color) 0%, var(--secondary-color) 100%);
    outline: none;
    position: relative;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: var(--transition-fast);
    border: 3px solid var(--primary-color);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
}

.slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: var(--transition-fast);
    border: 3px solid var(--primary-color);
}

.slider::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
}

.slider-range {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: #6B7280;
    margin-top: var(--spacing-xs);
}

.input-field {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #E5E7EB;
    border-radius: var(--border-radius-sm);
    font-size: 16px;
    transition: var(--transition-fast);
    font-family: inherit;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.input-group {
    margin-bottom: var(--spacing-md);
}

.input-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    font-size: 14px;
}

.result-card {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-md);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.result-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
}

.result-label {
    font-size: 14px;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-xs);
}

.result-value {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.result-details {
    font-size: 14px;
    opacity: 0.9;
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}

.result-detail {
    display: flex;
    flex-direction: column;
}

.result-detail-label {
    font-size: 12px;
    opacity: 0.8;
}

.result-detail-value {
    font-size: 18px;
    font-weight: 700;
}

.progress-bar {
    width: 100%;
    height: 24px;
    background: #E5E7EB;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    margin: var(--spacing-md) 0;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 12px;
    transition: width 0.5s ease-out;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: var(--spacing-sm);
    color: white;
    font-size: 12px;
    font-weight: 700;
}

.progress-bars {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.progress-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.progress-item-label {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    font-weight: 600;
}

.progress-item-amount {
    color: var(--primary-color);
}

.progress-bar-split {
    display: flex;
    height: 32px;
    border-radius: 16px;
    overflow: hidden;
}

.progress-segment {
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
    font-weight: 700;
    transition: var(--transition);
}

.progress-segment.principal {
    background: var(--primary-color);
}

.progress-segment.interest {
    background: var(--secondary-color);
}

.tooltip {
    position: relative;
    display: inline-flex;
    cursor: help;
}

.tooltip-icon {
    width: 16px;
    height: 16px;
    color: #9CA3AF;
}

.tooltip-content {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--text);
    color: white;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: 13px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-fast);
    z-index: 100;
}

.tooltip:hover .tooltip-content {
    opacity: 1;
}

.tooltip-content::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--text);
}

.calculator-widget {
    background: var(--surface);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.calculator-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.calculator-split {
    display: grid;
    grid-template-columns: 40% 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.comparison-card {
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    border: 2px solid #E5E7EB;
    transition: var(--transition-fast);
}

.comparison-card.current {
    border-color: var(--primary-color);
    background: rgba(255, 107, 53, 0.05);
}

.comparison-card:hover {
    border-color: var(--secondary-color);
    transform: translateY(-4px);
}

.comparison-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.comparison-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.comparison-detail {
    font-size: 13px;
    color: #6B7280;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-popular {
    background: var(--gradient-tertiary);
    color: white;
}

.badge-recommended {
    background: var(--gradient-secondary);
    color: var(--text);
}

.loading-spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 768px) {
    .calculator-split {
        grid-template-columns: 1fr;
    }
    
    .result-value {
        font-size: 42px;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    
    .btn-large {
        height: 48px;
        padding: 0 32px;
        font-size: 16px;
    }
}