/* Buttons - Car Charger Theme */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-height: 40px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: var(--text-light);
    box-shadow: 0 6px 20px rgba(26, 115, 232, 0.3);
    border: 2px solid transparent;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
    color: var(--text-light);
    box-shadow: 0 8px 25px rgba(26, 115, 232, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--dark-gray), var(--black));
    color: var(--text-light);
    box-shadow: 0 6px 20px rgba(46, 46, 46, 0.3);
    border: 2px solid transparent;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--black), var(--dark-gray));
    color: var(--text-light);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--primary-color);
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.1);
}

.btn-outline:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: var(--text-light);
    border-color: var(--primary-color);
    box-shadow: 0 8px 25px rgba(26, 115, 232, 0.25);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    min-height: 48px;
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    min-height: 36px;
}

/* Ripple effect for buttons */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.ripple:active::before {
    width: 300px;
    height: 300px;
}

/* Button States */
.btn:disabled {
    background: var(--text-secondary);
    color: rgba(255, 255, 255, 0.7);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn:disabled:hover {
    background: var(--text-secondary);
    transform: none;
    box-shadow: none;
}

/* Icon Buttons */
.btn-icon {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon-small {
    width: 36px;
    height: 36px;
    font-size: var(--font-size-sm);
}

/* Button Groups */
.btn-group {
    display: flex;
    gap: var(--spacing-sm);
}

.btn-group .btn {
    flex: 1;
}

/* CTA Buttons */
.cta-button {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: var(--text-light);
    padding: var(--spacing-lg) var(--spacing-xxl);
    font-size: var(--font-size-lg);
    font-weight: 700;
    border-radius: var(--radius-lg);
    box-shadow: 0 6px 20px rgba(26, 115, 232, 0.3);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    box-shadow: 0 8px 25px rgba(26, 115, 232, 0.4);
}

/* Responsive Buttons */
@media (max-width: 768px) {
    .btn-group {
        flex-direction: column;
    }
    
    .btn-large {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-base);
    }
    
    .cta-button {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-base);
    }
}